BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Tau physics at Belle II DTSTART;VALUE=DATE-TIME:20190301T040000Z DTEND;VALUE=DATE-TIME:20190301T042000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-597@indico.inp.nsk.su DESCRIPTION:Speakers: Petar RADOS (Deutsches Elektronen-Synchrotron (DESY) )\nThe Belle II experiment is a detector coupled to the SuperKEKB\nelectro n-positron accelerator\, located in Tsukuba\, Japan. From April to July\no f 2018\, Belle II completed the Phase II of commissioning in which ~500 pb -1\nof data was recorded. Phase III will start in 2019 and\, by 2025\, a d ataset\nof 50 ab-1 is expected. This large dataset will provide a unique o pportunity\nto study tau lepton physics with high precision. In this talk\ , the tau\nlepton rediscovery and mass measurement using the Phase II data will be\npresented\, followed by a review of the tau physics program for Phase III.\n\nhttps://indico.inp.nsk.su/event/15/contributions/597/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/597/ END:VEVENT BEGIN:VEVENT SUMMARY:Baryon form factors at BESIII DTSTART;VALUE=DATE-TIME:20190228T085000Z DTEND;VALUE=DATE-TIME:20190228T091000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-598@indico.inp.nsk.su DESCRIPTION:Speakers: Kai Zhu (Institute of High Energy Physics)\nIn this talk\, I shall present some recent progresses at BESIII for the studies of baryon form factors\, including the measuement of Lambda electromagnetic form factors\, the\nproton electromagnetic form factor in e+e-->p pbar in energy region 2.0 - 3.08 GeV. These results will be followed by a short di scussion about how does that improve our\nknowledge of the baryon form fac tors and the prospects of the BESIII program in this area.\n\nhttps://indi co.inp.nsk.su/event/15/contributions/598/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/598/ END:VEVENT BEGIN:VEVENT SUMMARY:Semileptonic tau decays: Powerful probes of non-standard charged c urrent weak interactions DTSTART;VALUE=DATE-TIME:20190301T030000Z DTEND;VALUE=DATE-TIME:20190301T032000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-676@indico.inp.nsk.su DESCRIPTION:Speakers: Pablo Roig (Cinvestav)\nTraditionally\, nuclear beta decays and radiative pion decays have been\nthought as the best processes to look for non-standard charged current\nweak interactions involving lig ht quarks. We put forward recently that\nsemileptonic tau decays are power ful probes in this respect\, too. Last\nadvances in this direction will be reviewed and compared to limits from\nother low-energy processes and LHC bounds.\n\nhttps://indico.inp.nsk.su/event/15/contributions/676/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/676/ END:VEVENT BEGIN:VEVENT SUMMARY:Tau mass measurement at BES-III DTSTART;VALUE=DATE-TIME:20190301T024000Z DTEND;VALUE=DATE-TIME:20190301T030000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-677@indico.inp.nsk.su DESCRIPTION:Speakers: Ivan Nikolaev (Budker Insitute of Nuclear Physics)\n We had performed a tau threshold scan with $\\int L \\approx 130~pb^{-1}$ for a\nnew tau-lepton mass measurement with BES-III detector in 2018. The beam energy\nis determined by laser backscattering and high-purity german ium detector which\nis calibrated by $\\gamma$-sources. We have done $J/\\ psi$ and $\\psi(2S)$-meson\nscans to examine beam energy measurement syste m. In this report we present\npreliminary result of the tau mass measurem ent.\n\nhttps://indico.inp.nsk.su/event/15/contributions/677/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/677/ END:VEVENT BEGIN:VEVENT SUMMARY:Searching for dark sector with missing mass technique in fixed tar get experiments DTSTART;VALUE=DATE-TIME:20190228T050000Z DTEND;VALUE=DATE-TIME:20190228T052000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-631@indico.inp.nsk.su DESCRIPTION:Speakers: Venelin Kozhuharov (LNF-INFN &\; University of So fia)\nCurrently\, the existence of a dark sector almost completely decoupl ed from the Standard Model is a viable solution for numerous long-standing problems in physics\, including the nature of dark matter and the muon an omalous magnetic moment. A new gauge mediator\, the dark photon\, could b e the portal to this hidden sector. The most general probe to its existenc e is the missing mass technique which requires a precise knowledge of the initial state of the process but does not put constraints on the dark phot on final states. The experimental approaches to the search for dark photon s in positron-on-target annihilation and in mesons decay in flight will be presented and the physics reach will be discussed.\n\nhttps://indico.inp. nsk.su/event/15/contributions/631/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/631/ END:VEVENT BEGIN:VEVENT SUMMARY:R measurement at KEDR DTSTART;VALUE=DATE-TIME:20190227T093000Z DTEND;VALUE=DATE-TIME:20190227T095000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-632@indico.inp.nsk.su DESCRIPTION:Speakers: Korneliy Todyshev (BINP)\nKEDR measured the R values at twenty two center-of-mass energies \nbetween 1.84 and 3.72 GeV. This result provides the most precise information about R in this energy range . We present results mentioned above \nas well as prospects for R measurem ent with VEPP-4M collider at KEDR experiment.\n\nhttps://indico.inp.nsk.su /event/15/contributions/632/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/632/ END:VEVENT BEGIN:VEVENT SUMMARY:The proton size radius: experiment vs theory DTSTART;VALUE=DATE-TIME:20190228T103000Z DTEND;VALUE=DATE-TIME:20190228T105000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-633@indico.inp.nsk.su DESCRIPTION:Speakers: Alexander Dorokhov (JINR)\nBrief review of the proto n radius problem is given. In the framework of the quasipotential method i n quantum electrodynamics we calculate the contribution of light pseudosca lar (PS) and axial-vector (AV) mesons to the interaction operator of a muo n and a proton in muonic hydrogen atom. The coupling of mesons with the mu on is via two-photon intermediate state. The parametrization of the transi tion form factor of two photons into PS and AV mesons\, based on the exper imental data on the transition form factors and QCD asymptotics\, is used. Numerical estimates of the contributions to the hyperfine structure of th e spectrum of the S and P levels are presented. It is shown that such cont ribution to the hyperfine splitting in muonic hydrogen is rather important for a comparison with precise experimental data.\n\nhttps://indico.inp.ns k.su/event/15/contributions/633/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/633/ END:VEVENT BEGIN:VEVENT SUMMARY:Light mesons from τ decays DTSTART;VALUE=DATE-TIME:20190301T042000Z DTEND;VALUE=DATE-TIME:20190301T044000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-599@indico.inp.nsk.su DESCRIPTION:Speakers: Sergi Gonzàlez-Solís (Department of Physics\, Indi ana University)\nThe τ is the only lepton massive enough to decay into ha drons. Its semilep-\ntonic decays provide a privileged scenario to study l ow-energy effects of the strong\ninteractions under rather clean condition s. Such advantageous framework is used to\nimprove our understanding of th e hadronization of QCD currents\, to study meson\nform factors and to extr act the physical parameters of the intermediate resonances\nproduced in th e decay. In this talk\, we will review the status of the hadronic τ decay \nmodes with particular attention to its decays into two hadrons. By explo iting the\nsynergy between dispersion relations and Chiral Perturbation Th eory we describe\nthe meson from factors that come up into play. We will a lso briefly review higher-\nmultiplicity decay modes. These involve a rich er dynamical structure but accounting\nfor the strong rescattering effects is not an easy task when three or more hadrons\nare present. The fantasti c possibilities offered by the Belle-II experiment to study\nτ physics an d low multiplicity final states with high precision make these studies of\ ntimely interest.\n\nhttps://indico.inp.nsk.su/event/15/contributions/599/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/599/ END:VEVENT BEGIN:VEVENT SUMMARY:Review of bottomonium studies at Belle DTSTART;VALUE=DATE-TIME:20190226T085000Z DTEND;VALUE=DATE-TIME:20190226T091000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-600@indico.inp.nsk.su DESCRIPTION:Speakers: Romen Mizuk (Lebedev Physical Institute)\nWe review recent Belle results on bottomonium. They include\nY(2S) --> gamma eta_b(1 S) with measurement of the eta_b(1S) mass\;\nY(4S) --> eta' Y(1S)\;\nenerg y scan of e+e- --> omega chi_bJ(1P)\; and\nupdated result on energy scan o f e+e- --> pi+pi- Y(1\,2\,3S) (new for this conference).\n\nhttps://indico .inp.nsk.su/event/15/contributions/600/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/600/ END:VEVENT BEGIN:VEVENT SUMMARY:Overview of a baryon-antibaryon pair production from electron-posi tron annihilation DTSTART;VALUE=DATE-TIME:20190228T105000Z DTEND;VALUE=DATE-TIME:20190228T111000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-601@indico.inp.nsk.su DESCRIPTION:Speakers: Andrzej Kupsc (Uppsala University)\nThe well-defined and simple\, initial state makes a baryon-antibaryon\npair production at an electron-positron collider a perfect system to\ntest discrete symmetrie s in the baryon sector and to study baryon\nproperties. In particular the production yields are much enhanced\nat the vector resonances such as J/ psi and psi'. The spin\norientations of the baryon and antibaryon are cor related and\, for spin\none-half baryons\, the pair is produced either wit h parallel or\nantiparallel helicites. The transitions to the respective h elicity states\ncan acquire a relative phase\, due to the strong interacti on in the\nfinal state\, leading to a time-reversal-odd observable: a tran sverse\nspin polarization of the baryons. The polarization could be\ndete rmined for hyperons using their weak decays. This effect was\nrecently obs erved\nat BESIII in the J/psi->Lambda_bar Lambda process.\nThe polarizatio n in baryon-antibaryon exclusive processes\nallows novel type of experimen ts such as simultaneous determination of\nthe Lambda and Lambda_bar decay\ nasymmetries. In the talk the method will be described and the prospects\ nfor the studies of\nweak decays of hyperons and for CP tests in baryon se ctor will be\ndiscussed.\n\nhttps://indico.inp.nsk.su/event/15/contributio ns/601/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/601/ END:VEVENT BEGIN:VEVENT SUMMARY:Meson production in e+e- annihilation and tau-lepton decays within extended NJL model DTSTART;VALUE=DATE-TIME:20190227T052000Z DTEND;VALUE=DATE-TIME:20190227T054000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-602@indico.inp.nsk.su DESCRIPTION:Speakers: Andrej Arbuzov (Joint Institute for Nuckear Research )\nThe extended Nambu–Jona-Lasinio model is briefly described and variou s ways of its application are demonstrated. Theoretical treatment of low-e nergy meson production processes in colliding e+e- beams and tau lepton de cays is reviewed. The processes considered occur via intermediate scalar\, vector\, and axial-vector mesons in the ground state and in the first rad ial excited one. The model employed uses the concept of spontaneous chiral symmetry breaking to describe such states. Experimental and theoretical c omparisons with other phenomenological strong interaction models are prese nted. The talk is based on the review [M.K. Volkov\, A.B. Arbuzov\, Phys. Usp. 60 (2017) 643] and a few later articles.\n\nhttps://indico.inp.nsk.su /event/15/contributions/602/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/602/ END:VEVENT BEGIN:VEVENT SUMMARY:The decay J/ψ→γX(Jᴾ)→γϕϕ: Dynamical analysis of X(Jᴾ) →ϕϕ resonance contributions. DTSTART;VALUE=DATE-TIME:20190227T044000Z DTEND;VALUE=DATE-TIME:20190227T050000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-603@indico.inp.nsk.su DESCRIPTION:Speakers: Arkadii Kozhevnikov (S.L. Sobolev Institute for Math ematics)\nThe dynamics of the $J^{PC}=0^{-+}$\, $0^{++}$\, and $2^{++}$ r esonance contributions to the decay $J/\\psi\\to\\gamma X(J^{PC})\\to\\ga mma\\phi\\phi$ is analysed using the data obtained by BESIII collaboration . The effective coupling constants parameterising invariant amplitudes of the transitions $J/\\psi\\to\\gamma X(J^{PC})$ and $X(J^{PC})\\to\\phi\\ph i$ and masses of $X(J^{PC})$ resonances are found from the fits. They are used for evaluation of the branching fractions $B_{X(J^{PC})\\to\\phi\\phi }$\, relative branching fractions $B_{J/\\psi\\to\\gamma X(J^{PC})\\to\\ga mma\\phi\\phi}$\, and for obtaining the photon angular distributions.\n\n https://indico.inp.nsk.su/event/15/contributions/603/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/603/ END:VEVENT BEGIN:VEVENT SUMMARY:Charm Physics DTSTART;VALUE=DATE-TIME:20190226T081000Z DTEND;VALUE=DATE-TIME:20190226T083000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-604@indico.inp.nsk.su DESCRIPTION:Speakers: Svjetlana Fajfer (Department of Theoretical Physics\ , Jožef Stefan Institute)\nUnderstanding  charm hadrons structures and d ynamics motivates many studies\nwithin QCD. In particular Lattice QCD can provide us with precise\ncalculation of the hadronic inputs required in   the   extraction of the CKM matrix elements as well as  leads to under standing of the exotic QCD structure as tertraquarks. \n\nIn the electrow eak sector  B meson anomalies and muon anomalous magnetic\nmoments initia ted many studies of physics beyond the Standard Model. The\nquestion is wh ether  charm sector can be affected by the same New Physics.\n\nIntensive studies of Dark Matter stimulated a number of studies aimed to\nconstrain or observe its presence in charm meson decays with the invisible\nparticl es in the final state.\n\nhttps://indico.inp.nsk.su/event/15/contributions /604/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/604/ END:VEVENT BEGIN:VEVENT SUMMARY:An amplitude analysis of the e+e−→4π reaction DTSTART;VALUE=DATE-TIME:20190301T022000Z DTEND;VALUE=DATE-TIME:20190301T024000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-605@indico.inp.nsk.su DESCRIPTION:Speakers: Evgeny Kozyrev (BINP)\nMy talk is about an analysis of the process $e^+e^- \\to 4 \\pi$ with the CMD-3 detector at the VEPP-20 00 Collider in the energy range 0.9--2.007 GeV. In my contribution I will focus on the study of the intermediate dynamics of the reaction\, i.e. I w ill talk about the results in the distinguishing of different intermediate mechanisms. The dominance of the (omega pi0) and (a1 pi) amplitudes will be proved. as well as the contribution of the rho+rho-\, rho f0. rho sigma and etc. states will be discussed. Also\, I will demonstrate the test of the isospin relation between the processes e+e- \\to pi+ pi- 2pi0\n\nhttps ://indico.inp.nsk.su/event/15/contributions/605/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/605/ END:VEVENT BEGIN:VEVENT SUMMARY:Off-shell fermion polarization and t-quark production DTSTART;VALUE=DATE-TIME:20190301T090000Z DTEND;VALUE=DATE-TIME:20190301T092000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-613@indico.inp.nsk.su DESCRIPTION:Speakers: Alexander Kaloshin (Irkutsk State University)\nStand ard calculation of polarization of final electron for pure initial state m ay be reformulated as a problem of looking for the complete polarization axis of produced state. In this problem the scattering amplitude is used ( instead of its square in standard approach) and it gives method for calcul ation of polarization applicable for both final and intermediate state f ermions. For this purpose it is convenient to use fermion propagator (bar e or dressed) in form of spectral representation\, which is based on eige nvalue problem and gives the system of orthogonal off-shell energy projec tors.\n \n These two poins together: (i) problem of looking for the comp lete polarization axis and (ii) spectral representation of fermion propag ator allow to give a corrrect definition for polarization of intermediate fermion.\n\n Most interesting is the case of fermion resonance (i.e. dre ssed propagator) in theory with P-parity violation. Corresponding the ener gy projection operators differ from the standard off-shell projectors and also contain $\\gamma^{5}$. Moreover\, in such theory the standard spin p rojectors do not commute with propagator and also should be modified.\n\n The obtained projectors are used to give the most accurate parametrizati on of t-quark resonance curve and simultaneously for its off-shell polariz ation.\n\nhttps://indico.inp.nsk.su/event/15/contributions/613/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/613/ END:VEVENT BEGIN:VEVENT SUMMARY:Electro-weak production of pseudovector C-even heavy quarkonia in electron-positron collisions on Belle II and BES III DTSTART;VALUE=DATE-TIME:20190226T083000Z DTEND;VALUE=DATE-TIME:20190226T085000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-606@indico.inp.nsk.su DESCRIPTION:Speakers: Nikolay Achasov (Sobolev Institute for Mathematics)\ nIt is shown that the $e^+e^-\\to Z\\to\\chi_{c1}/\\chi_{b1}$ and $e^+e^-\ \to\\gamma^{\\ast}\\gamma^{\\ast}\\to\\chi_{c1}/\\chi_{b1}$ contributions do not interfere in the total cross sections. That is\, the creation of lo ngitudinally polarized electron-positron\nbeams allows to study separately the $e^+e^-\\to Z\\to\\chi_{c1}/\\chi_{b1}$ and\n$e^+e^-\\to\\gamma^{\\as t}\\gamma^{\\ast}\\to\\chi_{c1}/\\chi_{b1}$.\n\nIn the discussed energy re gion the weak interaction grows with\nenergy increase $\\propto G_FE^2$\, where $G_F=10^{-5}m_p^{-2}$ is\nthe Fermi constant. $G_FE^2=1.4\\times 10^ {-4}$ for $\\chi_{c1}(1P)$\nand $G_FE^2=1.7\\times 10^{-4}$ for $\\chi_{c1 }(3872)$. That is\,\n$G_FE^2\\sim \\alpha^2$ in the BES III energy region. \n$G_FE^2=1.1\\times 10^{-3}$ for $\\chi_{b1}(1P)$ and\n$G_FE^2=1.2\\times 10^{-3}$ for $\\chi_{b1}(2P)$. That is\,\n$G_FE^2\\gg\\alpha^2$ in the Be lle II energy region.\n\nThe BESS III luminosity $10^{33} cm^{-2}s^{-1}$ gives possibilities to register near hundred of events $e^+e^-\\to Z\\to\\ chi_{c1}(1P)$ per day and near thirty of them in the well-known channel $\ \chi_{c1}(1P)\\to\\gamma\\psi(1S)$. If $\\chi_{c1}(3872)=\\chi_{c1}(2P)$\, then also near hundred of events $e^+e^-\\to Z\\to\\chi_{c1}(3872)$ per d ay may be registered and several of them in the channel $\\chi_{c1}(3872) \\to\\gamma\\psi(2S)$\, several tens of them in the channel $\\chi_{c1}(38 72)\\to D^0\\bar D^{0\\ast}+c.c$.\n\nThe huge Belle II luminosity $8\\time s 10^{35} cm^{-2}s^{-1}$ gives possibilities to register near hundred thou sand of events each $e^+e^-\\to Z\\to\\chi_{b1}(1P)$ and\n$e^+e^-\\to Z\\t o\\chi_{b1}(1P)$ per day and several tens of thousands of them in the wel l-known channels $\\chi_{b1}(1P)\\to\\gamma\\Upsilon(1S)$ and $\\chi_{b1}( 2P)\\to\\gamma\\Upsilon(2S)$.\n\nhttps://indico.inp.nsk.su/event/15/contri butions/606/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/606/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurements of the J/ψ and ψ(2S) leptonic widths with KEDR dete ctor DTSTART;VALUE=DATE-TIME:20190226T075000Z DTEND;VALUE=DATE-TIME:20190226T081000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-607@indico.inp.nsk.su DESCRIPTION:Speakers: Tatyana Kharlamova (BINP\, NSU)\nWe report latest pr ecise results on J/ψ and ψ(2S) parameters based on the data collected wi th the KEDR detector at the VEPP-4M e+e- collider. \nLeptonic width of J/ ψ meson and its composition to hadronic and electronic branching fraction s \nhave been measured directly with the processes e+e- →hadrons and e+ e- →e+e- at J/ψ\nresonance energy range. The obtained accuracy is less than 2%. \nThe product of the electronic width of the ψ(2S) meson and th e branching fraction of its decay to the muon pair has been measured in th e\n e+e−→ψ(2S)→μ+μ− process with the world best accuracy about 3%.\n Leptonic width of ψ(2S) meson was calculated\, using the previous KEDR measurements\nwith the lepton universality assumption and without it .\n\nhttps://indico.inp.nsk.su/event/15/contributions/607/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/607/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent results on tau lepton from Belle DTSTART;VALUE=DATE-TIME:20190301T054000Z DTEND;VALUE=DATE-TIME:20190301T060000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-608@indico.inp.nsk.su DESCRIPTION:Speakers: Yifan Jin (The university of Tokyo)\nThe world's lar gest statistic of tau is collected with Belle detector. Recently\, we meas ure the branching fraction for tau- -> pi- l+ l- nu\, which is predicted b y the Standard Model but not yet probed due to its small branching fractio n (O(10^-5)). In this presentation\, we show the measured result of this m ode and briefly report the status of other on-going analyses at Belle\, th e branching fraction of tau decay into three leptons and two neutrinos\, t he evaluation of Michel parameters using tau- -> l- nu nu and the branchin g fraction of tau decay into three hadrons and one neutrino.\n\nhttps://in dico.inp.nsk.su/event/15/contributions/608/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/608/ END:VEVENT BEGIN:VEVENT SUMMARY:Isoscalar and isovector kaon form factors from e+e− and τ data DTSTART;VALUE=DATE-TIME:20190227T050000Z DTEND;VALUE=DATE-TIME:20190227T052000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-610@indico.inp.nsk.su DESCRIPTION:Speakers: Konstantin Beloborodov (Budker Institute of Nuclear Physics)\nThe recent precise measurements of the $e^+e^-\\to K_SK_L$ and $ e^+e^-\\to K^+K^-$ cross sections and the hadronic spectral function of th e $\\tau^-\\to K^-K_S\\nu_\\tau$ decay are used to extract the isoscalar a nd isovector electromagnetic form ractors and their relative phase in a mo del independent way. The experimental results are compared with a fit base d on the vector-meson-dominance model.\n\nhttps://indico.inp.nsk.su/event/ 15/contributions/610/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/610/ END:VEVENT BEGIN:VEVENT SUMMARY:Axial-vector meson LbL contribution to g-2 of muon in nonlocal qua rk model DTSTART;VALUE=DATE-TIME:20190228T024000Z DTEND;VALUE=DATE-TIME:20190228T030000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-615@indico.inp.nsk.su DESCRIPTION:Speakers: Andrei Radzhabov (Matrosov Institute for System Dyna mics and Control Theory)\nThe light-by-light contribution to muon anomalou s magnetic moment from axial-vector meson exchanges is estimated in the fr amework of nonlocal quark model. The full kinematic dependence of the tran sition form-factor is taken into account. The comparison with existed para metrizations based on the experimental data on the transition form factor is performed. The corresponding contribution to the hyperfine splitting i n muonic hydrogen is discussed.\n\nhttps://indico.inp.nsk.su/event/15/cont ributions/615/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/615/ END:VEVENT BEGIN:VEVENT SUMMARY:Low-energy electron-positron collider to search and study (mu+ mu- ) bound state DTSTART;VALUE=DATE-TIME:20190225T034000Z DTEND;VALUE=DATE-TIME:20190225T041000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-616@indico.inp.nsk.su DESCRIPTION:Speakers: Anton Bogomyagkov (Budker Institute of Nuclear Physi cs)\nFrom six leptonic atoms (e^+ e^- )\, (μ^+ e^- )\, (μ^+ μ^- )\, (τ ^+ e^- )\, (τ^+ μ^- )\, (τ^+ τ^- ) only positronium (e^+ e^- ) and mu onium (μ^+ e^- ) were observed. Observation and study of dimuonium (μ^+ μ^- ) will test QED and quantum mechanics computations in the new regime. Dimuonium radius is 200 times smaller than positronium\; therefore\, it h as a higher new-physics reach potential in comparison with other exotic at oms. We propose a low energy e^+ e^- collider for production of the not y et observed (μ^+ μ^- ) bound system. Low beam energy E_beam≈400 MeV an d small circumference Π≈30 m of the machine make it inexpensive to manu facture and operate. Large angle (〖75〗^∘) crossing of e^+ e^- beams produces dimuonium with non-zero momentum shifting decay point from beams collision area and providing effective suppression of the main source of b ackground  elastic e^+ e^- scattering. The peak luminosity at μ^+ μ^- production threshold is 8×〖10〗^31 cm^(-2) s^(-1). Reversing one of t he beams direction allows to study π^± and η  mesons with high lumin osity.\n\nhttps://indico.inp.nsk.su/event/15/contributions/616/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/616/ END:VEVENT BEGIN:VEVENT SUMMARY:LHCb status and plans DTSTART;VALUE=DATE-TIME:20190225T031000Z DTEND;VALUE=DATE-TIME:20190225T034000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-618@indico.inp.nsk.su DESCRIPTION:Speakers: Pavel Krokovny (BINP)\nThis talk will present a stat us overview of ongoing LHCb upgrade.\nThe new detector is designed to oper ate at the instantaneous luminosity of\n2·10^33 cm-2s-1\, more than five times higher than in Run 2.\nA crucial part of the upgrade is the software -only trigger\, which should be\nable to select the desired events at 30MH z input rate with up to six\nvisible interactions per bunch crossing.\nCur rent upgrade status and highlight performance results will be shown. In ad dition\, the LHCb physics program and preparation for future challenges wi ll be presented.\n\nhttps://indico.inp.nsk.su/event/15/contributions/618/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/618/ END:VEVENT BEGIN:VEVENT SUMMARY:Meson spectroscopy at VES and COMPASS DTSTART;VALUE=DATE-TIME:20190227T105000Z DTEND;VALUE=DATE-TIME:20190227T111000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-619@indico.inp.nsk.su DESCRIPTION:Speakers: Dmitry Ryabchikov (Institute for High Energy Physics )\nDiffractive production of $\\pi^+\\pi^-\\pi^-$ and $\\pi^-\\pi^0\\pi^0$ final states\nare subjects of comprehensive studies performed recently by VES and COMPASS experiments.\nThe $3\\pi$ states are produced at VES by 29 GeV/c $\\pi^-$ beam on Be target \n( $87x10^6$ $\\pi^+\\pi^-\\pi^- $ events and $32x10^6$ $\\pi^-\\pi^0\\pi^0$ events analyzed at 0 \n\nhttps ://indico.inp.nsk.su/event/15/contributions/619/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/619/ END:VEVENT BEGIN:VEVENT SUMMARY:Dispersive approach to the hadronic light-by-light contribution to the muon g-2 DTSTART;VALUE=DATE-TIME:20190228T020000Z DTEND;VALUE=DATE-TIME:20190228T022000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-620@indico.inp.nsk.su DESCRIPTION:Speakers: Gilberto Colangelo (University of Bern)\nI will summ arize the status of the dispersive approach to the hadronic light-by-light contribution to the muon $g-2$\, and in particular report on recent progr ess\, in particular concerning the role of short-distance constraints.\n\n https://indico.inp.nsk.su/event/15/contributions/620/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/620/ END:VEVENT BEGIN:VEVENT SUMMARY:New Muonium Hyperfine Structure Measurement at J-PARC KEK IMSS DTSTART;VALUE=DATE-TIME:20190225T083000Z DTEND;VALUE=DATE-TIME:20190225T085000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-625@indico.inp.nsk.su DESCRIPTION:Speakers: Koichioro Shimomura (KEK IMSS)\nHigh precision measu rements of the ground state hyperfine structure (HFS)\n of muonium\, a lep tonic system made of a bound state of a positive muon \nwith an electron\, is a stringent tool for testing bound-state quantum \nelectrodynamics (QE D) theory\, determining fundamental constants of the \nmuon magnetic momen t and mass\, and searches for new physics. Muonium is \nthe most suitable system to test QED because both theoretical and \nexperimental values can be precisely determined.\n\nAt the J-PARC Muon Science Facility (MUSE)\, t he MuSEUM collaboration is \nplaning complementary measurements of muonium HFS both at zero field and \nat high magnetic field. The new high-intensi ty muon beam that will soon \nbe available at MUSE H-Line will provide an opportunity to improve the \nprecision of these measurements by one order of magnitude. The previous \nmeasurements at zero field [1] and high field [2] were performed decades \nago at LAMPF with experimental uncertainties mostly dominated by \nstatistical errors. An overview of the different as pects of these new \nmuonium HFS measurements\, the current status of the preparation for high\n-field measurements\, and the latest measurements at zero field will be \npresented.\n\n[1] D. E. Casperson et al.\, Physics L etters 59B (1975) 397.\n\n[2] W. Liu et al.\, Physical Review Letters 82 ( 1999) 711.\n\nhttps://indico.inp.nsk.su/event/15/contributions/625/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/625/ END:VEVENT BEGIN:VEVENT SUMMARY:The MUonE project: theory progress DTSTART;VALUE=DATE-TIME:20190228T030000Z DTEND;VALUE=DATE-TIME:20190228T032000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-626@indico.inp.nsk.su DESCRIPTION:Speakers: Massimo Passera (INFN Padova)\nQED radiative correct ions to µe → µe: NNLO calculation\; Theory status and progress.\n\nhtt ps://indico.inp.nsk.su/event/15/contributions/626/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/626/ END:VEVENT BEGIN:VEVENT SUMMARY:Light exotic mesons at COMPASS DTSTART;VALUE=DATE-TIME:20190227T103000Z DTEND;VALUE=DATE-TIME:20190227T105000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-627@indico.inp.nsk.su DESCRIPTION:Speakers: Bernhard Ketzer (University of Bonn)\nIn recent year s\, the spectroscopy of hadrons containing heavy quarks has brought forwar d a plethora of new and unexpected resonance-like signals. Many of these s o-called $X$\, $Y$\,$Z$ states are candidates for states beyond the quark- antiquark configurations of mesons\, which have been sought after since th e introduction of the quark model. Similar studies in the light-quark sect or are more challenging due to the wide and overlapping nature of known re sonances. Recent high-quality data samples\, collected by\nthe COMPASS exp eriment at CERN\, open the possibility to search for exotics also at masse s below 2.5 GeV. In\nparticular\, access to hadrons with explicit gluonic degrees of freedom is\nexpected to be easier in this mass region. Recently \, lattice QCD started to make predictions on the multiplet structure of e xotic hadrons\, which may be used as a guideline in the experimental searc hes.\n\nThe COMPASS experiment at CERN uses a high-energy pion beam scatte red off protons and heavier nuclei to produce mesonic excitations\, which are observed in multi-particle final states subjected to partial-wave anal yses. In addition to studying the properties of established mesons with un precedented accuracy\, the large existing data samples allow us to detect possibly exotic states. These either do not fit current theoretical expect ations\, like the recently observed $a_1(1420)$\, or carry spin-exotic qua ntum numbers\, like the $\\pi_1(1600)$. The talk will give an update on on going studies of these states involving novel analysis techniques and disc uss possible interpretations.\n\nFuture plans concerning hadron spectrosco py in the strange and charm quark sector\, envisaged at AMBER/COMPASS++\, a new fixed-target QCD facility at CERN\, will be presented.\n\nhttps://in dico.inp.nsk.su/event/15/contributions/627/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/627/ END:VEVENT BEGIN:VEVENT SUMMARY:A review of present experimental status of the K -> pi nu nubar de cays at the NA62 DTSTART;VALUE=DATE-TIME:20190301T084000Z DTEND;VALUE=DATE-TIME:20190301T090000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-628@indico.inp.nsk.su DESCRIPTION:Speakers: Artur Shaikhiev (Institute for Nuclear Research RAS) \nA review of present experimental status of the K -> pi nu nubar\ndecays is given in the talk. The NA62 experiment at CERN SPS is\ndesigned to meas ure the branching ratio of the K+ -> pi+ nu nubar\nusing a novel kaon deca y-in-flight technique\, while the KOTO\nexperiment at JPARC aims to study the KL -> pi0 nu nubar decay.\nBoth experiments produced new results in 20 18. The NA62\nexperiment observed one candidate event\, compatible with th e\nStandard Model prediction. The KOTO experiment improved the\nexisting u pper limits on the branching ratio of the neutral kaon\ndecay by an order of magnitude.\n\nhttps://indico.inp.nsk.su/event/15/contributions/628/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/628/ END:VEVENT BEGIN:VEVENT SUMMARY:The KLOE-2 experiment at DAΦNE DTSTART;VALUE=DATE-TIME:20190225T073000Z DTEND;VALUE=DATE-TIME:20190225T080000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-629@indico.inp.nsk.su DESCRIPTION:Speakers: Elena Perez del Rio (LNF-INFN)\, Paolo Gauzzi (La Sa pienza University of Rome (Italy))\nThe KLOE-2 experiment at the INFN Labo ratori Nazionali di Frascati has finished its data-taking campaign at the DAΦNE ϕ-factory with the collection of 5.5 fb$^{-1}$ of integrated lumi nosity. A peak luminosity of $2.4\\times 10^{32} cm^{-2}s^{-1}$ and a maxi mum daily integrated of 14 pb$^{-1}$ were achieved with the crab waist sc heme of beam collisions.\nKLOE-2 represents the continuation of the KLOE e xperiment with a improved physics program mainly focused on the study of K $_S$\, η rare decays as well as on kaon interferometry\, test of discrete symmetries\, and search for physics beyond the Standard Model. The collec ted data sample will allow to perform CPT symmetry and quantum coherence t ests using entangled neutral kaons\, studies of pseudoscalar mesons produc ed in γγ-physics collisions\, and the search for signals of a hidden dar k-matter sector\, among the fields to be addressed.\nThe general purpose K LOE detector\, composed by one of the biggest Drift Chamber ever built sur rounded by a lead-scintillating fiber Electromagnetic Calorimeter among th e best ones for energy and timing performance at low energies\, undergone several upgrades including an Inner Tracker made of cylindrical GEMs\, t o improve vertex reconstruction capabilities near the interaction region\, a tagging system for scattered electrons in γγ processes\, and small a ngle calorimeters to inprove the acceptance for particles coming from the Interaction Point.\nAn overview of the KLOE-2 experiment will be given inc luding present status and achievements together with physics plans.\n\nhtt ps://indico.inp.nsk.su/event/15/contributions/629/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/629/ END:VEVENT BEGIN:VEVENT SUMMARY:The NNbar and multihadron production at the threshold at VEPP2000 DTSTART;VALUE=DATE-TIME:20190228T093000Z DTEND;VALUE=DATE-TIME:20190228T095000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-630@indico.inp.nsk.su DESCRIPTION:Speakers: Evgeny Solodov (BINP)\nA study of hadron production at the nucleon-antinucleon threshold has been\nperformed with the CMD-3 d etector at the VEPP-2000 $e^+e^-$ collider. \nA very fast rise with about 1 MeV width has been observed in the $e^+e^- \\to p\\bar p$ cross section .\nA sharp drop in the $e^+e^- \\to 3(\\pi^+\\pi^-)$ cross section has bee n confirmed and found\nto have a less than 2 MeV width\, \nin agreement wi th the observed fast rise of the $e^+e^- \\to p\\bar p$ cross\nsection. Fo r the first time a similar sharp drop is demonstrated in the\n$e^+e^- \\to K^+K^-\\pi^+\\pi^-$ cross section. The behavior of the\n$e^+e^- \\to 3(\\ pi^+\\pi^-)\,~ K^+K^-\\pi^+\\pi^-$ cross sections cannot be explained\nby an interference of any resonance amplitude with continuum\, therefore this \nphenomenon cannot be due to a narrow near-threshold resonance. No such\ nstructure has been observed in the $e^+e^- \\to 2(\\pi^+\\pi^-)$ cross se ction.\n\nhttps://indico.inp.nsk.su/event/15/contributions/630/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/630/ END:VEVENT BEGIN:VEVENT SUMMARY:BEPCII and BESIII Status and Plans DTSTART;VALUE=DATE-TIME:20190225T053000Z DTEND;VALUE=DATE-TIME:20190225T060000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-674@indico.inp.nsk.su DESCRIPTION:Speakers: Chengping SHEN (Beihang University)\nThe BESIII dete ctor and BEPCII accelerator represent major upgrades over the previous ve rsion of BES and BEPC\; the facility is used for\nstudies of had ron spectroscopy and ?-charm physics. The design luminosity was reached in 2016\, setting a new world record for the accelerator in\nthis energy reg ime. After opertaing for more than ten years\, BESIII has achieved great s uccess. In my this report\, I review current status of BEPCII\nand BESIII\ , and also will show the future plan for the upgrade.\n\nhttps://indico.in p.nsk.su/event/15/contributions/674/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/674/ END:VEVENT BEGIN:VEVENT SUMMARY:XYZ search at Belle II DTSTART;VALUE=DATE-TIME:20190226T030000Z DTEND;VALUE=DATE-TIME:20190226T032000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-634@indico.inp.nsk.su DESCRIPTION:Speakers: Elisabetta Prencipe (Forschungszentrum Juelich)\nThe Belle II experiment has successfully concluded Phase-2 of data taking in July 2018\, and soon will start Phase-III\, with the complete detector set up\, planned\nin April 2019. Great perspectives and unique physics cases a re enhanced in the Belle II physics program. In the sector of charmonium a nd spectroscopy\, Belle II will\ninvestigate several physics processes: IS R physics for the vector states and bottomonium search are some examples where the contribution of the this experiment will help\nin better underst anding QCD\, for which several open questions still remain. First simulati ons and data analyses will be shown\, with the first available dataset (20 18)\, and\nthe plan for spectroscopy search at Belle II will be discussed. \n\nhttps://indico.inp.nsk.su/event/15/contributions/634/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/634/ END:VEVENT BEGIN:VEVENT SUMMARY:Super KEKB and Belle2 status and plans DTSTART;VALUE=DATE-TIME:20190225T043000Z DTEND;VALUE=DATE-TIME:20190225T050000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-635@indico.inp.nsk.su DESCRIPTION:Speakers: Xiaolong Wang (Fudan University)\nhttps://indico.inp .nsk.su/event/15/contributions/635/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/635/ END:VEVENT BEGIN:VEVENT SUMMARY:Light Hadron Spectroscopy at BESIII DTSTART;VALUE=DATE-TIME:20190227T042000Z DTEND;VALUE=DATE-TIME:20190227T044000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-638@indico.inp.nsk.su DESCRIPTION:Speakers: Tianjue Min (Nanjing University)\nLight Hadron Spect roscopy at BESIII\n\nhttps://indico.inp.nsk.su/event/15/contributions/638/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/638/ END:VEVENT BEGIN:VEVENT SUMMARY:QCD effects in searches for GeV-scale new physics. DTSTART;VALUE=DATE-TIME:20190228T073000Z DTEND;VALUE=DATE-TIME:20190228T075000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-639@indico.inp.nsk.su DESCRIPTION:Speakers: Dmitry Gorbunov (INR RAS)\nThe Standard Model of par ticle physics fails to explain several important\nphenomena like neutrino oscillations\, matter-antimatter asymmetry of\nthe Universe\, cosmological dark matter. While we definitely need some\nnew physics capable of explai ning the phenomena above\, the absence of\nany new particles at colliders implies that they are either very heavy\nor feebly interacting with the kn own particles. In the latter case\nthey can be at GeV mass range\, produce d by and/or decaying to\nhadrons. We discuss the associated with QCD diffi culties in obtaining the accurate\npredictions for the new particle produc tion and decay rates\, \nconcentrating on the singlet scalar\, fermion and vector messengers to\nthe hidden sector.\n\nhttps://indico.inp.nsk.su/eve nt/15/contributions/639/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/639/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent results from CMD-3 DTSTART;VALUE=DATE-TIME:20190227T073000Z DTEND;VALUE=DATE-TIME:20190227T075000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-641@indico.inp.nsk.su DESCRIPTION:Speakers: Fedor Ignatov (BINP)\nhttps://indico.inp.nsk.su/even t/15/contributions/641/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/641/ END:VEVENT BEGIN:VEVENT SUMMARY:The XYZ mesons: what aren’t they? DTSTART;VALUE=DATE-TIME:20190226T044000Z DTEND;VALUE=DATE-TIME:20190226T050000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-642@indico.inp.nsk.su DESCRIPTION:Speakers: Stephen Lars OLSEN (University of Chinese Academy of Sciences)\nThe list of XYZ mesons\, which was initiated 16 years ago\, co ntinues to expand.\nAlthough these states have a number of common properti es\, including: large\nbranching fractions to hidden-quarkonium states (in spite of kinematically\naccessible open-flavor\, fall-apart decay channel s)\; relatively narrow widths\; and\npreferences for $J^{P(C)} =1^{+(+)}$ quantum numbers\, no single theoretical model can\nprovide a comprehensive description for them. Since the models that have been\nproposed: molecule s\, tetraquarks\, QCD-hybrids\, hadro-quarkonium\, etc.\, can\, at\nbest\, provide adequate descriptions for only a small subset of the observations \, a\nconcise exposition of what are they? is a Sisyphean task that I have given up on.\nInstead\, I restrict myself to the easier question: what ar en’t they?\n\nhttps://indico.inp.nsk.su/event/15/contributions/642/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/642/ END:VEVENT BEGIN:VEVENT SUMMARY:Hadronic and Transition Form Factor Measurements at BESIII DTSTART;VALUE=DATE-TIME:20190227T085000Z DTEND;VALUE=DATE-TIME:20190227T091000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-643@indico.inp.nsk.su DESCRIPTION:Speakers: Christoph Florian Redmer (Institute for Nuclear Phys ics\, Johannes Gutenberg-University Mainz)\nMotivated by the need of exper imental input to improve the Standard Model prediction of the anomalous ma gnetic moment of the muon $a_\\mu$\, the BESIII collaboration started a de dicated program to measure hadronic cross sections as well as transition f orm factors (TFF) with high accuracy. In this presentation we will focus o n the two-photon physics program\, which is dedicated to the measurement o f TFFs. The data acquired at BESIII allow to study the momentum dependence of the TFFs of light pseudoscalar mesons dominating the hadronic Light-by -Light contribution to $a_\\mu$ in the relevant kinematic region. The curr ent status and ongoing investigations of will be discussed.\n\nhttps://ind ico.inp.nsk.su/event/15/contributions/643/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/643/ END:VEVENT BEGIN:VEVENT SUMMARY:The Neutral Pion Radiative Width: The Final Result from PrimEx (Je fferson Lab) DTSTART;VALUE=DATE-TIME:20190301T020000Z DTEND;VALUE=DATE-TIME:20190301T022000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-653@indico.inp.nsk.su DESCRIPTION:Speakers: Ilya Larin (University of Massachusetts Amherst)\nTh e π 0 →γγ decay amplitude is determined by the chiral anomaly. Recent theoretical calculations\nhave been made within Chiral Perturbation Theor y and predict decay width at a percent precision\nlevel. Precise measureme nt of π 0 →γγ decay width gives a possibility to check these predicti ons.\nThe PrimEx experiment unutilized Primakoff effect to measure π 0 ra diative decay width.\nPrimakoff effect is a powerful tool for measuring ra diative width of particles. In this talk\, the final\nresult of the PrimEx experiment performed in Hall-B at Jefferson Lab will be presented. The\nP rimEx-I experiment performed in 2004 achieved precision of 2.8%. PrimEx-II has been\nconducted in 2010 with a collection of five times more statisti cs and achieved 1.6% precision.\nη→γγ decay width measurement experim ent planned at Jefferson Lab will also be discussed. The\nproject was supp orted in part by NSF MRI PHY 0079840 and RFBR 18-02-00938.\n\nhttps://indi co.inp.nsk.su/event/15/contributions/653/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/653/ END:VEVENT BEGIN:VEVENT SUMMARY:Light mesons from JPAC analyses DTSTART;VALUE=DATE-TIME:20190227T020000Z DTEND;VALUE=DATE-TIME:20190227T022000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-644@indico.inp.nsk.su DESCRIPTION:Speakers: Mikhail Mikhasenko (HISKP\, Universität Bonn)\nIden tifying properties of excited hadronic states in the light meson sector re mains an ongoing challenge\, due to large widths\, significant overlaps\, and multiple decay channels of the resonances.\nA systematic approach usin g the unitarity-based coupled channel frameworks is required\; for the rea ction-independent determination of the resonance parameters\, the pole pos itions of the resonances need to be extracted.\nAs will be shown in the ta lk\, several works in this direction have been performed by the Joint Phys ics Analysis Center (JPAC) in the past year in the tensor ($J^{PC}=2^{++}$ ) and exotic ($J^{PC}=1^{-+}$) waves of $\\eta(')\\pi$ system measured by the COMPASS experiment ([PLB 779 (2018)](http://inspirehep.net/record/1609 260) and\n[arXiv:1810.04171](http://inspirehep.net/record/1697661)).\nThe spin-exotic sector $J^{PC}=1^{-+}$ is also accessible from the partial wav e analysis of the three pions system measured in diffractive reaction $\\p i\\\,p \\to 3\\pi\\\,p$\, however\, the studies are hampered by the presen ce of a large\, coherent\, non-resonant background\, known as the Deck pro cess. I will highlight ongoing work on a comparison of the various models for this non-resonant production and show its influence found in the data. As the first steps in the route of understanding interaction in the $J^{P C}=1^{++}$ sector and the Deck process\, we have built a model based on th e approximate three-body unitary\, fixed the free parameters by fitting it to the clean ALEPH data on $\\tau\\to 3\\pi\\\,\\nu_\\tau$ decay. The pol e position of the $a_1(1260)$ has been extracted for the first time using the unitary model ([PRD 98 (2018)\, 096021](http://inspirehep.net/record/1 696497)).\n\nhttps://indico.inp.nsk.su/event/15/contributions/644/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/644/ END:VEVENT BEGIN:VEVENT SUMMARY:Two-photon physics at Belle DTSTART;VALUE=DATE-TIME:20190227T083000Z DTEND;VALUE=DATE-TIME:20190227T085000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-645@indico.inp.nsk.su DESCRIPTION:Speakers: Elisabetta Prencipe (Forschungszentrum Juelich)\nThe Belle experiment has measured various two-photon physics processes\, most ly using\na no-tag method\, and for a few of them also a single-tag techni que. This way to analyze physics\nprocesses is useful to investigate trans ition form factors\, as well as search for XYZ exotic\nstates and baryons. A review of the main achievements at Belle will be given\, and recent\nr esults will be shown.\n\nhttps://indico.inp.nsk.su/event/15/contributions/ 645/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/645/ END:VEVENT BEGIN:VEVENT SUMMARY:COMET status and plans DTSTART;VALUE=DATE-TIME:20190226T073000Z DTEND;VALUE=DATE-TIME:20190226T075000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-646@indico.inp.nsk.su DESCRIPTION:Speakers: Dzmitry Shoukavy (B.I.Stepanov Institute of Physics of the National Academy of Sciences of Belarus)\nLepton Flavour Violation in the charged lepton sector (CLFV) is forbidden in the Standard Model. T herefore\, the observation of CLFV process would be clear evidence of phy sics beyond the Standard Model.\nThe COMET (COherent Muon to Electron Tra nsitions) experiment will measure one of these processes: $\\mu N \\righta rrow eN$ at the Japan Proton Accelerator Research Complex (J-PARC) in Toka i\, Japan. The COMET experiment will be conducted in two phases. Phase-I o f the\nexperiment is aiming at a signal sensitivity of $3.1 \\times 10^{ −15}$. Phase-II will use much more intense beam and a more complex detec tion system to achieve a single-event sensitivity of ~ $3 \\times 10^{− 17}$. \nThis report gives an overview of construction and status of the CO MET experiment.\n\nhttps://indico.inp.nsk.su/event/15/contributions/646/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/646/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for highly ionizing particles with the Belle II pixel detec tor DTSTART;VALUE=DATE-TIME:20190228T054000Z DTEND;VALUE=DATE-TIME:20190228T060000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-648@indico.inp.nsk.su DESCRIPTION:Speakers: Katharina Dort (Justus Liebig University Giessen)\nT he Belle II experiment\, located at the SuperKEKB collider at the high-ene rgy research facility KEK in Tsukuba\, Japan\, started operation in 2018. Compared to the predecessor\nexperiment Belle\, Belle II plans to increase the peak luminosity by a factor of \n\nhttps://indico.inp.nsk.su/event/15 /contributions/648/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/648/ END:VEVENT BEGIN:VEVENT SUMMARY:XYZ at Belle DTSTART;VALUE=DATE-TIME:20190226T022000Z DTEND;VALUE=DATE-TIME:20190226T024000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-649@indico.inp.nsk.su DESCRIPTION:Speakers: Jens Soeren Lange (University Giessen)\nNew results and present status of exotic\, narrow states with heavy quarks\, often ref erred to as "XYZ states"\, at the Belle experiment will be presented. Not only\nobservations\, but also results of negative searches will be reviewe d. Interpretation in view of the landscape of so far observed conventional and exotic states will be\nattempted\, with comparison to theory expectat ions.\n\nhttps://indico.inp.nsk.su/event/15/contributions/649/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/649/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of Michel parameters in tau decays at high luminosity e+ e- factories DTSTART;VALUE=DATE-TIME:20190301T044000Z DTEND;VALUE=DATE-TIME:20190301T050000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-650@indico.inp.nsk.su DESCRIPTION:Speakers: Denis Epifanov (BINP)\nMichel parameters (MP) define the Lorentz structure of the Charged Weak\nInteraction mediated by W boso n in the Standard Model (SM). \nThey are in the list of the basic properti es of tau lepton. \nThe difference of the measured MP from their SM expect ation \nwill exhibit clear signature of the New Physics. \nWe discuss the key points of the analysis of the huge data \nsample of taus collected at Belle to measure MP\nin leptonic tau decays. Essential point of the analys is is to \nconsider the spin-spin correlation of taus\, which allows us to \nextract MP related to tau polarization. At the e+ e- factories \nwith u npolarized beams one have to analyze decay products of \nboth taus to be s ensitive to the spin-spin correlation. \nNonzero average polarization of s ingle tau at the Super \nCharm-Tau factory with polarized e- beam provides unique \npossibility to measure all Michel parameters without tagging \nt he opposite tau.\n\nhttps://indico.inp.nsk.su/event/15/contributions/650/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/650/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent BaBar results in light hadron spectroscopy DTSTART;VALUE=DATE-TIME:20190227T101000Z DTEND;VALUE=DATE-TIME:20190227T103000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-651@indico.inp.nsk.su DESCRIPTION:Speakers: Evgeny Kozyrev (BINP)\nA program of measuring the li ght hadrons production in exclusive e+e− \\to hadrons processes is in pl ace at BABAR\, with the aim to improve the calculation of the hadronic con tribution to the muon g−2. We present the most recent results obtained b y using the full data set of about 470 fb−1 collected by the BABAR exper iment at the PEP-II e+e− collider at a center-of-mass energy of about 10 .6 GeV. In particular\, we report the results on the channels e+e−→π+ π−π0π0\, pi+pi-pi0pi0pi0(η)\, e+e−→π+π−η. Additionally\, we present the study of the two-photon process e+e−→e+e−η′ in the d ouble-tag mode. The results for the form factor are compared with the pred ictions based on pQCD and VMD.\n\nhttps://indico.inp.nsk.su/event/15/contr ibutions/651/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/651/ END:VEVENT BEGIN:VEVENT SUMMARY:New Physics Beyond the SM at BESIII DTSTART;VALUE=DATE-TIME:20190228T075000Z DTEND;VALUE=DATE-TIME:20190228T081000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-656@indico.inp.nsk.su DESCRIPTION:Speakers: Ming-Gang Zhao (Nankai University)\nNumerous astroph ysical observations strongly suggest the existence of Dark Matter\, which provides a hint of dark sector physics. There could exist many dark candid ates predicted by theories BSM\, such as dark photons and invisible things \, that communicate with the Standard Model sector. The masses and decay m odes of these particles are expected to be accessible at the BESIII experi ment which is the only currently running tau-charm factory with the larges t threshold charm samples and some other unique datasets. We have recently performed searches of dark photons and invisible things in several decay modes. Besides\, light Higgs\, FCNC processes\, BNV/LNV processes are also investigated. This talk will summarize the recent results at BESIII on th ese searches for new physics BSM.\n\nhttps://indico.inp.nsk.su/event/15/co ntributions/656/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/656/ END:VEVENT BEGIN:VEVENT SUMMARY:Physics with tau leptons at CMS DTSTART;VALUE=DATE-TIME:20190301T050000Z DTEND;VALUE=DATE-TIME:20190301T052000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-659@indico.inp.nsk.su DESCRIPTION:Speakers: Vladimir Cherepanov (UF)\nTau lepton is an important tool for new physics searches at the LHC. This talk focuses on the measur ement of the reconstruction and identification performance of the hadronic tau decays by the CMS detector. The measurements include the performance of the identification\, trigger\, energy calibration and decay mode classi fication algorithms for reconstructed tau candidates. Applications of the developed tau reconstruction algorithms to physics measurements with tau l eptons at CMS detector are also presented.\n\nhttps://indico.inp.nsk.su/ev ent/15/contributions/659/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/659/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent results on Kaon Physics at KLOE-2 DTSTART;VALUE=DATE-TIME:20190228T083000Z DTEND;VALUE=DATE-TIME:20190228T085000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-660@indico.inp.nsk.su DESCRIPTION:Speakers: Alessandro Di Cicco (Roma Tre Univeristy)\nKLOE-2 ex tends the physics program of the forerunner KLOE experiment\, especially i n the\nfield of discrete symmetries tests with neutral kaons. KLOE and KLO E-2 have collected\ntogether the largest sample of electron-positron colli sions at an energy equal to the φ-meson\nmass\, corresponding to about $2 .4×10^{10}$ produced φ mesons.\n\nIn this talk I will review the latest results on neutral kaon physics at KLOE together with the\nstatus and pros pects of the analyses of KLOE-2 data. I will report about a new measuremen t\nof the charge asymmetry in $K_S$ semileptonic decays with 1.7 fb$^{-1}$ of KLOE data\, which\nimproves the sensitivity of previous measurements o f about a factor two. Furthermore\, I\nwill discuss the status of the anal ysis devoted to directly test T and CPT symmetries in\nneutral kaons trans itions\, as well as the search of the pure CP-violating $K_S → 3\\pi^0$ decay\nusing part of the recently acquired KLOE-2 dataset.\n\nhttps://indi co.inp.nsk.su/event/15/contributions/660/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/660/ END:VEVENT BEGIN:VEVENT SUMMARY:Super Charm-Tau project at Novosibirsk DTSTART;VALUE=DATE-TIME:20190225T024000Z DTEND;VALUE=DATE-TIME:20190225T031000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-661@indico.inp.nsk.su DESCRIPTION:Speakers: Ivan Logashenko (BINP)\nThe Super Charm–Tau factor y at the Budker Institute of Nuclear Physics (Novosibirsk\, Russia) is an electron-positron collider that will operate in the center-of-mass energy range from 2 to 5-6 GeV with the peak luminosity of about $10^{35}$ cm$^{ −2}$s$^{−1}$. The main goal of experiments is to study processes with c quark or τ leptons in the final state. The experiments at Super Charm-t au factory are complementary to experiments at LHCb and Belle-II. \n\nWe'l l discuss the physics case for the Super Charm–Tau factory\, the concept ual design of the collider and the detector and the status of the project. \n\nhttps://indico.inp.nsk.su/event/15/contributions/661/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/661/ END:VEVENT BEGIN:VEVENT SUMMARY:New information on the strong isospin symmetry breaking in the rea ctions of the a0(980) and f0(980) resonance production DTSTART;VALUE=DATE-TIME:20190227T030000Z DTEND;VALUE=DATE-TIME:20190227T032000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-663@indico.inp.nsk.su DESCRIPTION:Speakers: Georgii Shestakov (Sobolev Institute for Mathematics )\, Nikolay Achasov (Sobolev Institute for Mathematics)\nThe strong isospi n symmetry breaking is discussed as a tool for studying the production mec hanisms and nature of light scalar mesons. The review considers various re actions in which it can be detected and in which the mixing of a00(980) an d f0(980) resonances that breaks the isotopic invariance due to the mass d ierence of K+ and K0 mesons has already been observed experimentally.\n\nh ttps://indico.inp.nsk.su/event/15/contributions/663/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/663/ END:VEVENT BEGIN:VEVENT SUMMARY:New results and perspectives in neutrino physics DTSTART;VALUE=DATE-TIME:20190225T104000Z DTEND;VALUE=DATE-TIME:20190225T110000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-675@indico.inp.nsk.su DESCRIPTION:Speakers: YURY KUDENKO (INR\, MOSCOW)\nThe review of the prese nt status and futures perspectives of study neutrino oscillations in accel erator and reactor experiments will be presented. The results obtained in current long baseline accelerator experiments T2K and NOvA are discussed. An emphasis is put on a search for CP violation in neutrino oscillations. The brief overview and status of the next generation accelerator based exp eriments T2HK (Japan) with 260 kt Hyper-Kamiokande far neutrino detector a nd DUNE (USA) with 40 kt LAr TPCs will be given. The recent progress an d results obtained in searches for light sterile neutrinos in accelerato r and reactor experiments will be also discussed. Finally\, the direct me asurement of the neutrino mass and status of neutrinoless double beta deca ys experiments will be presented.\n\nhttps://indico.inp.nsk.su/event/15/co ntributions/675/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/675/ END:VEVENT BEGIN:VEVENT SUMMARY:MUonE status and plans DTSTART;VALUE=DATE-TIME:20190225T093000Z DTEND;VALUE=DATE-TIME:20190225T095000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-664@indico.inp.nsk.su DESCRIPTION:Speakers: Umberto Marconi (INFN)\nThe MUonE experiment aims to measure with very high-precision the hadronic contribution to the running of alpha $\\Delta\\alpha_{had}(t)$\, for space-like transferred momenta $ t = q^2 \n\nhttps://indico.inp.nsk.su/event/15/contributions/664/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/664/ END:VEVENT BEGIN:VEVENT SUMMARY:Progress of Super Tau-Charm Facility (STCF) in China DTSTART;VALUE=DATE-TIME:20190225T080000Z DTEND;VALUE=DATE-TIME:20190225T083000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-665@indico.inp.nsk.su DESCRIPTION:Speakers: Haiping Peng PENG (University of Science and Technol ogy\, China)\nThe super tau-charm facility is of rich in the physics progr am\, is an unique platform for the physics with charmed quark and tau lept on\, and provide a great opportunity for study of QCD\, exotic hadrons as well as search for new physics. BEPCII/BESIII\, which is the only one mach ine running at the tau-charm region at present\, is producing fruitful phy sics results\, but will end its mission in 5-8 years. A STCF in China is a nature extension of BEPCII/BESIII\, and the R&D process is ongoing in Chi na. In this talk\, we will introduce you the progress of STCF in China.\n\ nhttps://indico.inp.nsk.su/event/15/contributions/665/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/665/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent results on tau lepton from BaBar DTSTART;VALUE=DATE-TIME:20190227T054000Z DTEND;VALUE=DATE-TIME:20190227T060000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-666@indico.inp.nsk.su DESCRIPTION:Speakers: Alberto Lusiani (Scuola Normale Superiore)\nWe prese nt measurements of the branching fractions of tau- to K- (pi-)\nn pi0 nu_t au\, and the branching fraction and spectral function of tau-\nto K- K0 nu _tau\, obtained with the full data sample collected by the\nBaBar experime nt at PEP-II. Implications on the determination of Vus\nwith tau decays wi ll be discussed.\n\nhttps://indico.inp.nsk.su/event/15/contributions/666/ LOCATION:Budker INP URL:https://indico.inp.nsk.su/event/15/contributions/666/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent results of the NA64 experiment at the CERN SPS DTSTART;VALUE=DATE-TIME:20190228T081000Z DTEND;VALUE=DATE-TIME:20190228T083000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-667@indico.inp.nsk.su DESCRIPTION:Speakers: Mikhail Kirsanov (INR RAS Moscow)\nWe report the rec ent results of the NA64 experiment at CERN on the search for a hypothetica l X-boson which could explain the 8Be* anomaly. The results of the search for the dark photon A' which could mediate a new interaction between the v isible and dark sectors and future NA64 research program will be also disc ussed.\n\nhttps://indico.inp.nsk.su/event/15/contributions/667/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/667/ END:VEVENT BEGIN:VEVENT SUMMARY:Dispersive analysis of the two-pion contribution to the hadronic v acuum polarization to the (g−2)μ DTSTART;VALUE=DATE-TIME:20190228T034000Z DTEND;VALUE=DATE-TIME:20190228T040000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-668@indico.inp.nsk.su DESCRIPTION:Speakers: Gilberto Colangelo (University of Bern)\nI will pres ent the results of a dispersive analysis of the pion vector form factor\, which determines the two-pion contribution to the $(g-2)_\\mu$ below 1 GeV . As a by-product\, both the $P$-wave $\\pi \\pi$ phase shift as well as t he pion charge radius have been determined with higher precision than befo re.\n\nhttps://indico.inp.nsk.su/event/15/contributions/668/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/668/ END:VEVENT BEGIN:VEVENT SUMMARY:R value measurement at BESIII DTSTART;VALUE=DATE-TIME:20190227T095000Z DTEND;VALUE=DATE-TIME:20190227T101000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-669@indico.inp.nsk.su DESCRIPTION:Speakers: Haiming Hu (IHEP， CAS)\nUsing data samples collect ed with BESIII detector operating at BEPCII storage ring\, \nthe R value i s measured at 14 energy points from the center-of-mass energies 2.2324 \nt o 3.671 GeV. This talk gives the descriptions and information for the data analysis\, \nthe calculations of the initial state radiations and generat ors simulations. \n(The average uncertainty of 14 R values is about 3%\, w hich is dominated by the systematic uncertainty.)\n\nhttps://indico.inp.ns k.su/event/15/contributions/669/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/669/ END:VEVENT BEGIN:VEVENT SUMMARY:The updated status of the pseudoscalar glueball studies DTSTART;VALUE=DATE-TIME:20190227T022000Z DTEND;VALUE=DATE-TIME:20190227T024000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-670@indico.inp.nsk.su DESCRIPTION:Speakers: Qiang Zhao (Institute of High Energy Physics\, Chine se Academy of Sciences)\nThe present theoretical and experimental status o f the pseudoscalar glueball studies will be reviewed. We'd show that a con verged picture from both theoretical and experimental evidences does not s upport the eta(1405) to be the so-far broadly quoted pseudoscalar glueball candidate.\n\nhttps://indico.inp.nsk.su/event/15/contributions/670/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/670/ END:VEVENT BEGIN:VEVENT SUMMARY:The Muon g-2 experiment at Fermilab DTSTART;VALUE=DATE-TIME:20190228T042000Z DTEND;VALUE=DATE-TIME:20190228T044000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-671@indico.inp.nsk.su DESCRIPTION:Speakers: Keshavarzi Alex (University of Mississippi)\nThe stu dy of the anomalous magnetic moment of the muon\, Muon g-2\, stands as an enduring and stringent test of the Standard Model (SM)\, where the\ncurren t 3.5 standard deviations (or higher) discrepancy between the theoretical prediction and the experimental measurement could be an indication of\nnew physics beyond the SM. The E989 Muon g?2 experiment at Fermilab aims to m easure the muon anomaly to an unprecedented precision of 140\nparts-per-bi llion\, with an aim to either resolve or confirm this discrepancy. In this talk\, I will discuss the current status of the analysis of Run-1\ndata t aken during the spring of 2018 and give an update on overall progress as w e enter a new data-taking period.\n\nhttps://indico.inp.nsk.su/event/15/co ntributions/671/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/671/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for dark forces at KLOE-2 DTSTART;VALUE=DATE-TIME:20190228T052000Z DTEND;VALUE=DATE-TIME:20190228T054000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-672@indico.inp.nsk.su DESCRIPTION:Speakers: Elena Perez del Rio (LNF-INFN)\nDuring the last year s several Dark Sector Models have been proposed in order\nto address strik ing and pluzzing astrophysical observations which fail standard\ninterpret ations.\nIn the minimal case a new vector particle\, the so called dark ph oton or U-boson\,\nis introduced\, with small coupling with Standard Model particles. Also\, the existence of a dark Higgs boson h’ is postulated\ , in analogy with the Standard\nModel\, to give mass to the U-boson throug h the Spontaneous Symmetry Breaking mechanism. The discovery of such a Dar k Force Mediator would belong to\na new field of Physics Beyond the Standa rd Model.\nThe KLOE experiment\, working on the DAΦNE e+e- collider in Fr ascati\, searched\nfor the existence of the U-boson in a quite complete wa y\, investigating several\ndifferent processes and final states. Tight lim its on the model parameters have\nbeen set at 90%CL. Further improvements are expected in terms of sensitivity\nand discovery potential with the new KLOE-2 detector working on the improved\nDAFNE e+e- collider\, which has collected more than 5 fb−1.\n\nhttps://indico.inp.nsk.su/event/15/contri butions/672/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/672/ END:VEVENT BEGIN:VEVENT SUMMARY:J-PARC muon g-2/EDM experiment DTSTART;VALUE=DATE-TIME:20190225T085000Z DTEND;VALUE=DATE-TIME:20190225T091000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-673@indico.inp.nsk.su DESCRIPTION:Speakers: Takayuki Yamazaki (KEK)\nThe J-PARC muon $g-2$/EDM e xperiment (E34 experiment) aims to measure the muon anomalous magnetic mom ent with a precision of 0.5 ppm and search for muon electric dipole moment with a sensitivity of $10^{-21}~e\\cdot$cm. The method of this experiment \n is independent of Fermilab's experiment\, and a low-emittance muon bea m and a factor of 20 smaller muon storage magnet are utilized. A new muon beam line (H-line) at J-PARC and dedicated muon LINAC to reaccelerate ultr a-slow muons are under construction to supply a low-emittance muon beam. T he latest update and current status of this experiment will be reported.\n \nhttps://indico.inp.nsk.su/event/15/contributions/673/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/673/ END:VEVENT BEGIN:VEVENT SUMMARY:Hadronic Decays of the tau Lepton DTSTART;VALUE=DATE-TIME:20190301T032000Z DTEND;VALUE=DATE-TIME:20190301T034000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-678@indico.inp.nsk.su DESCRIPTION:Speakers: Emilie Passemar (Indiana University/JLab)\nSeveral e xperimental collaborations have recently invested considerable effort in p recision studies of hadronic tau decays. \nWith further improvements expec ted at Belle-II\, it is important to discuss the theoretical implications of these experimental advances. In this talk\, I will review several such implications. First\, we will show that hadronic tau decays represent a cl ean laboratory \nfor the precise study of Quantum Chromodynamics (QCD) in its non perturbative regime. \nSecond\, these decays can be used as a prob e of the electroweak interaction. In this respect\, we will discuss how ta u decays and in particular $\\tau \\to \\ell \\pi \\pi$ decays can be an i nteresting probe for lepton flavour violation allowing to unveil new pheno mena.\n\nhttps://indico.inp.nsk.su/event/15/contributions/678/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/678/ END:VEVENT BEGIN:VEVENT SUMMARY:Charmed mesons and baryons at LHCb DTSTART;VALUE=DATE-TIME:20190301T081000Z DTEND;VALUE=DATE-TIME:20190301T084000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-679@indico.inp.nsk.su DESCRIPTION:Speakers: Alexey Dzyuba (B.P. Konstantinov Petersburg Nuclear Physics Institute National Research Center "Kurchatov Institute")\nLHCb co llected a world-leading sample of charmed baryons during LHC's Run 1 (2010 -2012) and Run 2 (2015-2018). With this data set\, LHCb is discovering man y previously unobserved charmed states and making the most precise determi nations of the properties of known states. LHCb's latest results on charme d baryons are presented.\n\nhttps://indico.inp.nsk.su/event/15/contributio ns/679/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/679/ END:VEVENT BEGIN:VEVENT SUMMARY:XYZ states at BESIII DTSTART;VALUE=DATE-TIME:20190226T020000Z DTEND;VALUE=DATE-TIME:20190226T022000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-680@indico.inp.nsk.su DESCRIPTION:Speakers: Zhentian Sun (Institute of High Energy Physics\, CAS )\nBESIII has observed a lot of unclassified states which don't suit the s tandard quark model. These states are named as XYZ states\, such as X(3872 )\, Y(4260)\, $Z_c(3900)$... Some of these states are candidates of exotic tetra-quark states\, molecular states\, hybrid and so on. I'll report th e recent experimental results from BESIII about these XYZ states.\n\nhttps ://indico.inp.nsk.su/event/15/contributions/680/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/680/ END:VEVENT BEGIN:VEVENT SUMMARY:XYZ at LHCb DTSTART;VALUE=DATE-TIME:20190226T024000Z DTEND;VALUE=DATE-TIME:20190226T030000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-681@indico.inp.nsk.su DESCRIPTION:Speakers: Viacheslav Matiunin (Institute for Theoretical and E xperimental Physics)\nThe LHCb experiment is designed to study properties and decays of heavy hadrons produced in proton-proton collisions at the LH C. The large statistics collected by the LHCb experiment enables precision spectroscopy studies of beauty hadrons. The recent results on spectroscop y of conventional and exotic hadrons based on the data collected in Run-1 and Run-2 of LHC will be presented.\n\nhttps://indico.inp.nsk.su/event/15/ contributions/681/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/681/ END:VEVENT BEGIN:VEVENT SUMMARY:Prospects of precision XYZ spectroscopy at PANDA/FAIR DTSTART;VALUE=DATE-TIME:20190226T042000Z DTEND;VALUE=DATE-TIME:20190226T044000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-682@indico.inp.nsk.su DESCRIPTION:Speakers: Frank Nerling (GU Frankfurt\, GSI Darmstadt)\nThe PA NDA experiment at the new FAIR facility under construction at GSI/Darmstad t (Germany) \nis dedicated to a broad hadron physics programme addressing various different aspects of QCD. \nThe multi-purpose PANDA detector will especially be best suited for charmonium spectroscopy. \nIn combination wi th an intense and high-quality antiproton beam\, PANDA will be able to per form \nprecision spectroscopy via the method of resonance energy scan meas urements. The uniqueness of \nPANDA to contribute to the field will be dis cussed.\n\nhttps://indico.inp.nsk.su/event/15/contributions/682/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/682/ END:VEVENT BEGIN:VEVENT SUMMARY:Charmonium studies at Belle DTSTART;VALUE=DATE-TIME:20190226T054000Z DTEND;VALUE=DATE-TIME:20190226T060000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-683@indico.inp.nsk.su DESCRIPTION:Speakers: Kirill Chilikin (LPI RAS)\nWe present an overview of conventional charmonium studies at Belle. It includes the observation of the $\\chi_{c0}(3860)$\, the measurement of the absolute branching fractio ns of $B^+ \\rightarrow X_{c\\bar{c}} K^+$\, the observation of $e^+e^- \\ rightarrow \\chi_{c1}\\gamma$\, and other new results.\n\nhttps://indico.i np.nsk.su/event/15/contributions/683/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/683/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for the dark gauge vector and scalar bosons\, the axion-lik e pseudo-scalar\, and the dark matter at lepton colliders DTSTART;VALUE=DATE-TIME:20190228T044000Z DTEND;VALUE=DATE-TIME:20190228T050000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-684@indico.inp.nsk.su DESCRIPTION:Speakers: Igal Jaegle (University of Florida)\nSince 1933\, co smological anomalies are reported at different scales and ages of the Univ erse. These anomalies could be due to a non-luminous mass ("dark matter")\ ,\nchange of the laws of gravity\, or a combination of both.  Lepton coll iders can investigate the non-luminous mass scenario by searching for diff erent dark matter\ncandidates (millicharged dark matter\, axion-like\, or very stable multi-quark states) and new force carriers (dark vector\, dark scalar\, or axion-like). We will\nreview the new results of BABAR and Bel le\, and the expected Belle II sensitivities to these searches.\n\nhttps:/ /indico.inp.nsk.su/event/15/contributions/684/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/684/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent results on hadronic Physics at KLOE-2 DTSTART;VALUE=DATE-TIME:20190227T081000Z DTEND;VALUE=DATE-TIME:20190227T083000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-685@indico.inp.nsk.su DESCRIPTION:Speakers: Francesca Curciarello (INFN-Laboratori Nazionali di Frascati)\nThe KLOE-2 experiment at the Frascati φ−factory ended last y ear collecting\nmore than 5 fb$^{−1}$ at the φ peak. The new data sampl e together with the KLOE\none corresponds to $2.4 ×10^{10}$ φ and $3.1 × 10^8$ η meson events. It represents the\nlargest sample ever collected at the φ peak in $e^+ e^-$ colliders allowing to study\nlight mesons wit h unprecedented statistics.\n\nRecent results obtained with KLOE data on h adron physics e.g. rare η meson\ndecays\, combination of hadron cross sec tion measurements and determination\nof $a^{\\pi\\pi}_{\\mu}$ \, measureme nt of the running of the fine structure constant below 1 GeV\nand progress in γγ studies will be reviewed.\n\nhttps://indico.inp.nsk.su/event/15/c ontributions/685/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/685/ END:VEVENT BEGIN:VEVENT SUMMARY:BINP electron-positron facilities DTSTART;VALUE=DATE-TIME:20190225T050000Z DTEND;VALUE=DATE-TIME:20190225T053000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-686@indico.inp.nsk.su DESCRIPTION:Speakers: Dmitry Shwartz (BINP)\nThe overview of two running B INP electron-positron colliders VEPP-4M (1-5 GeV/beam) and VEPP-2000 (0.15 -1 GeV/beam) is presented. Since 2016 both colliders are joint to the sing le accelerator complex via common injector of high quality intensive beams . In 2017 VEPP-2000 resumed data taking after 3 years of upgrade. The lumi nosity was increased in a factor of 3-5 in a whole energy range.\n\nhttps: //indico.inp.nsk.su/event/15/contributions/686/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/686/ END:VEVENT BEGIN:VEVENT SUMMARY:Open Charm Physics at BESIII DTSTART;VALUE=DATE-TIME:20190301T073000Z DTEND;VALUE=DATE-TIME:20190301T075000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-687@indico.inp.nsk.su DESCRIPTION:Speakers: Peter Weidenkaff (Institut fuer Kernphysik\, Mainz)\ nThe BESIII experiment at the BEPCII collider analyses $e^+e^−$ collisio ns in\nthe charmonium region. The accessible energy range covers several c harm related thresholds\, such as $D\\bar{D}\, D_sD_s^*$. BESIII has recor ded large samples at\nthose energies and the special topology of quantum-c orrelated pairs of D decays\nserves as ideal laboratory for the study of c harm decays.\n\nIn this talk we present recent results from the analysis o f $D^0$ \, $D^+$ and $D_s$ decays. In particular\, the measurement of form -factors and decay constants using\nleptonic and semi-leptonic final state s and results from partial-wave analyses\nand branching fraction measureme nts of hadronic final states.\n\nhttps://indico.inp.nsk.su/event/15/contri butions/687/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/687/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent results from SND detector at VEPP-2000 collider. DTSTART;VALUE=DATE-TIME:20190227T075000Z DTEND;VALUE=DATE-TIME:20190227T081000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-688@indico.inp.nsk.su DESCRIPTION:Speakers: Mikhail Achasov (BINP)\nRecent results on e+e- annih ilation to hadrons from SND\n experimnet at VEPP-2000 collider are presen ted. Corresponding data set is\n about 80 pb-1 of integrated luminosity c ollected at sqrt{s} below 2 GeV.\n\nhttps://indico.inp.nsk.su/event/15/con tributions/688/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/688/ END:VEVENT BEGIN:VEVENT SUMMARY:Leptonic decays of the tau lepton DTSTART;VALUE=DATE-TIME:20190301T052000Z DTEND;VALUE=DATE-TIME:20190301T054000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-689@indico.inp.nsk.su DESCRIPTION:Speakers: Matteo Fael (University of Siegen)\nI will review of theoretical aspects of the tau leptonic decays\, including the radiative ($\\tau \\rightarrow l \\gamma \\nu \\bar \\nu $) and the five-body ($\\t au \\rightarrow l l l \\nu \\bar \\nu$) decay modes\, which are among the most powerful tools to study precisely the structure of the weak interacti on and to constrain possible contributions beyond the V–A coupling of th e Standard Model.\n\nhttps://indico.inp.nsk.su/event/15/contributions/689/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/689/ END:VEVENT BEGIN:VEVENT SUMMARY:Strange Light Resonances DTSTART;VALUE=DATE-TIME:20190227T032000Z DTEND;VALUE=DATE-TIME:20190227T034000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-690@indico.inp.nsk.su DESCRIPTION:Speakers: Jose Pelaez (Universidad Complutense de Madrid)\nI w ill review recent work on the determination of strange resonance parameter s from meson-meson scattering data\, using dispersion relations and other techniques based on analytic properties of amplitudes. Although I will dis cuss resonances below 1.7 GeV\, I will pay particular attention to the lig htest strange resonance K*(800) or kappa meson and the dispersive determin ation of its existence and its pole paramters as well as its possible non- ordinary nature.\n\nhttps://indico.inp.nsk.su/event/15/contributions/690/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/690/ END:VEVENT BEGIN:VEVENT SUMMARY:Precision Hadron Physics at the future MESA accelerator DTSTART;VALUE=DATE-TIME:20190225T095000Z DTEND;VALUE=DATE-TIME:20190225T101000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-691@indico.inp.nsk.su DESCRIPTION:Speakers: Denig Achim (JGU Mainz)\nBased on the expertise in h igh-intensity electron accelerator technology at the Mainz Microtron MAMI\ , a new accelerator MESA (Mainz Energy-Recovering Superconducting Accelera tor) is currently under construction at the Institute for Nuclear Physics at Johannes Gutenberg University Mainz. MESA will be operated at low beam energies below 155 MeV\, but at high inensities of at least 1 mA of beam c urrent. The high intensity will provide the basis for a series of precisio n experiments in the fields of hadron and low-energy particle physics. In this talk\, highlights of the research programme at MESA will be discussed including a new measurement of the electroweak mixing angle at low moment um transfer (P2 experiment)\, measurements of the electromagnetic form fac tors of the nucleons (MAGIX experiment) as well as searches for dark secto r particles (the MAGIX and the beam dump experiment BDX). These experiment s will be operated either in the extracted beam mode of MESA (P2 and BDX) or in the energy-recovering mode (MAGIX) of the accelerator\, in which for the first time a high-intensity energy-recovering beam will be operated i n conjunction with a gas internal target.\n\nhttps://indico.inp.nsk.su/eve nt/15/contributions/691/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/691/ END:VEVENT BEGIN:VEVENT SUMMARY:MEG2 and Mu3E status and plans DTSTART;VALUE=DATE-TIME:20190225T101000Z DTEND;VALUE=DATE-TIME:20190225T104000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-692@indico.inp.nsk.su DESCRIPTION:Speakers: Paolo Walter Cattaneo (INFN Pavia)\nThe status of th e MEG II experiment\, the upgrade of MEG\, whose goal is to\nsearch for th e forbidden decay mu -> e+ gamma with increased precision\, is presented.\ nAfter a brief review of the motivations behind such a search and the curr ent limit\ndue to MEG\, we present the design of the detector in detail.\n The motivations of the upgrade of each subdetector is presented\nwith the resolution improvements expected and measured.\nNovel subdetectors and cal ibration hardware are introduced.\nResults from beam tests on the subdetec tors are presented.\nThe schedule of the forthcoming years is presented.\n We conclude with the expected sensitivity of the MEGII experiment.\n\nhttp s://indico.inp.nsk.su/event/15/contributions/692/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/692/ END:VEVENT BEGIN:VEVENT SUMMARY:The neutron EDM and bounds on rare decays of eta and eta-prime mes ons DTSTART;VALUE=DATE-TIME:20190228T111000Z DTEND;VALUE=DATE-TIME:20190228T113000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-693@indico.inp.nsk.su DESCRIPTION:Speakers: Alexey Zhevlakov (TSU)\nHere will be present an impr oved estimate of the CPV coupling constants of the and 0 mesons to two pi ons using upper limits from data on the neutron electric dipole moment (nE DM). Using a phenomenological Lagrangian approach based on nonderivative c ouplings of the pseudoscalar mesons with nucleons\, we include the full mo mentum dependence of the eta-pi-pi or eta-prime-pi-pi couplings in a two-l oop approach to the nEDM calculation. Furthermore\, this approach enables the inclusion of charged pion loops\, therefore allowing for the leading e lectric photon minimal couplings. The upper limits\nfor the rates of the C PV decays eta(eta-prime) into pair of pions that we derive are by orders o f magnitude more stringent than those from the existing experiments so far .\n\nhttps://indico.inp.nsk.su/event/15/contributions/693/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/693/ END:VEVENT BEGIN:VEVENT SUMMARY:Meson Decay Studies from MAMI A2 DTSTART;VALUE=DATE-TIME:20190227T034000Z DTEND;VALUE=DATE-TIME:20190227T040000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-694@indico.inp.nsk.su DESCRIPTION:Speakers: Lena Heijkenskjöld (Institut für Kernphysik\, Joha nnes Gutenberg Universität Mainz)\nDecays of the light mesons $\\pi^0\\$\ , $\\eta$\, $\\omega$\, and $\\eta'$ provide a unique laboratory to test f undamental aspects of hadron physics. Precision studies of such diverse to pics as the light quark mass ratio\, $\\pi-\\pi$ scattering lengths\, and searches for physics beyond the Standard Model are possible. Additionally\ , their Dalitz decays provide a way of measuring the electromagnetic meson Transition Form Factors (TFFs) in the time-like region. Precise knowledge of pseudoscalar TFFs is vital for the precision frontier of the Standard Model as they are needed as experimental input in calculations of the hadr onic Light-by-Light contribution to the anomalous magnetic moment of the m uon.\n\n\nThe A2 tagged photon facility at the Mainz Microtron (MAMI) prov ides a high yield of light mesons produced by photo-induced reactions on p rotons. It makes the experiment ideal for high precision measurements of m eson decays. The experimental setup utilises the Bremsstrahlung distributi on of the A2 photon beam\, produced from the MAMI electron beam\, along wi th a system of detectors that nearly covers the full solid angle.\n\n\nThi s talk will highlight the recent contributions as well as ongoing studies by the A2 collaboration in the field of light meson interactions.\n\nhttps ://indico.inp.nsk.su/event/15/contributions/694/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/694/ END:VEVENT BEGIN:VEVENT SUMMARY:Exotic molecular states in the decays of vector bottomonia DTSTART;VALUE=DATE-TIME:20190226T034000Z DTEND;VALUE=DATE-TIME:20190226T040000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-695@indico.inp.nsk.su DESCRIPTION:Speakers: Alexey Nefediev (Lebedev Physical Institute)\nThe mo st recent experimental data for the decays of the vector bottomonium Upsil on(10860) proceeding through the formation of the states Zb(10610) and Zb( 10650) are analysed simultaneously using solutions of the Lippmann-Schwing er equations which respect constraints from unitarity and analyticity. The interaction potential in the open-bottom channels B(*)-anti-B* contains s hort-range interactions as well as the one-pion exchange\; both types of t he interaction are taken into account fully nonperturbatively. This way\, all parameters of the interaction are fixed directly from the data and the pole positions for the Zb's are determined as a prediction. In particular \, both Zb states are found to be described by poles located on the unphys ical Riemann sheets in the vicinity of the corresponding thresholds: the Z b(10610) is associated with a virtual state residing just below the B-anti -B* threshold while the Zb(10650) state is most likely located just above the B*-anti-B* threshold. The heavy quark spin symmetry is employed to pre dict\, in a parameter-free way\, the pole positions and the line shapes in the elastic and inelastic channels for the Zbs' spin partner states W_bJ with the quantum numbers J++ (J=0\,1\,2). Such spin partners can be produc ed in radiative decays of the Upsilon(10860) state and\, if they exist\, a re expected to be detected in the Belle-II experiment.\n\nhttps://indico.i np.nsk.su/event/15/contributions/695/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/695/ END:VEVENT BEGIN:VEVENT SUMMARY:Semileptonic D0 and D+ decays as a probe of the a0(980) nature DTSTART;VALUE=DATE-TIME:20190227T024000Z DTEND;VALUE=DATE-TIME:20190227T030000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-696@indico.inp.nsk.su DESCRIPTION:Speakers: Alexey Kiselev (Sobolev Institute for Mathematics)\n The decays $D^0\\to d\\bar u\\\,e^+\\nu\\to a^-_0(980)\\\,\ne^+\\nu\\to\\p i^-\\eta\\\, e^+\\nu$ and $D^+\\to d\\bar d\\\,e^+\\nu\\to\na^0_0(980)\\\, e^+\\nu\\to\\pi^0\\eta\\\, e^+\\nu$ (and the charge\nconjugated ones) are the direct probe of the constituent two-quark\ncomponents in the $a^\\pm_ 0(980)$ and $a^0_0(980)$ wave functions.\nRecent BESIII experiment is the first step in experimental study\nof these decays. We suggest adequate for mulas for the data\nanalysis and present a variant of $\\eta\\pi$ invarian t mass\ndistribution when $a_0(980)$ has no constituent two-quark\ncompone nt at all.\n\nhttps://indico.inp.nsk.su/event/15/contributions/696/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/696/ END:VEVENT BEGIN:VEVENT SUMMARY:Muon g-2: a new data-based analysis DTSTART;VALUE=DATE-TIME:20190228T022000Z DTEND;VALUE=DATE-TIME:20190228T024000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-697@indico.inp.nsk.su DESCRIPTION:Speakers: Daisuke Nomura (KEK)\nThis work presents a complete re-evaluation of the hadronic vacuum polarization contributions to the ano malous magnetic moment of the muon from the combination of e+ e- --> hadro ns cross section data. Focus has been placed on the development of a new data combination method\, which fully incorporates\nall correlated statist ical and systematic uncertainties in\na bias free approach. All available e+ e- --> hadrons cross\nsection data have been analyzed and included\, w here the new\ndata compilation has yielded the full hadronic R-ratio and\n its covariance matrix in the energy range $m_{\\pi} \n\nhttps://indico.inp .nsk.su/event/15/contributions/697/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/697/ END:VEVENT BEGIN:VEVENT SUMMARY:COMPASS++/AMBER and the Proton Radius Puzzle DTSTART;VALUE=DATE-TIME:20190228T101000Z DTEND;VALUE=DATE-TIME:20190228T103000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-698@indico.inp.nsk.su DESCRIPTION:Speakers: Jan Friedrich (TU München)\nCERN provides the large variety of high-energy beams for nuclear and particle physics research. O ne is the beam line M2 which is optimized to deliver an intense muon beam\ , but also hadron beams of both polarities. They are brought to an overgro und hall\, which is used since many years almost exclusively by the COMPAS S collaboration\, with a broad experimental physics program on Quantum Chr omodynamics (QCD). The most relevant results and activities of the collabo ration\, in terms of pion-photon reactions for determination of the chiral anomaly and the related radiative width of the rho meson\, will be discus sed.\n\nSince many questions around QCD remain still open\, the follow-up facility COMPASS++/AMBER is envisaged\, aiming at up-to-date detector arch itecture and a large variety of measurements. They range from lowest-Q2 ph ysics as the determination of the proton radius from elastic muon-proton s cattering\, to average-Q2 reactions for hadron spectroscopy\nand high-Q2 h adron structure investigations via the Drell-Yan process and deeply-virtua l Compton scattering.\n\nThe recently submitted Letter of Intent for COMPA SS++/AMBER will be discussed. Focus will be given to the elastic muon-prot on scattering measurement\, that may contribute significantly to solve the proton radius puzzle due to the usage of a high-energy muon beam.\n\nhttp s://indico.inp.nsk.su/event/15/contributions/698/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/698/ END:VEVENT BEGIN:VEVENT SUMMARY:Charmonium at BESIII DTSTART;VALUE=DATE-TIME:20190226T052000Z DTEND;VALUE=DATE-TIME:20190226T054000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-699@indico.inp.nsk.su DESCRIPTION:Speakers: Lianjin Wu (Institute of High Energy Physics\, Beiji ng)\nBESIII is an ideal laboratory to study charmonium decays\, due to it' s largest sample on J/psi\, psi(2S) etc. Its achieved luminosity has reach ed the design luminosity. Recently\, a lot of interesting studies are perf ormed by BESIII\, such as study of psi(2S)-> e+ e- chi_cJ\, chi_cJ->e+ e- J/psi\, J/psi -> Lambda_c+ e- + c.c. etc. This talk will introduce a few o f them briefly.\n\nhttps://indico.inp.nsk.su/event/15/contributions/699/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/699/ END:VEVENT BEGIN:VEVENT SUMMARY:Theoretical Aspects of XYZ states DTSTART;VALUE=DATE-TIME:20190226T032000Z DTEND;VALUE=DATE-TIME:20190226T034000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-700@indico.inp.nsk.su DESCRIPTION:Speakers: Feng-Kun Guo (Institute of Theoretical Physics\, Chi nese Academy of Sciences)\nSelected theoretical aspects of the XYZ states\ , including different structure models and effects from kinematical singul arities\, will be discussed.\n\nhttps://indico.inp.nsk.su/event/15/contrib utions/700/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/700/ END:VEVENT BEGIN:VEVENT SUMMARY:Charmonium studies at LHCb DTSTART;VALUE=DATE-TIME:20190226T050000Z DTEND;VALUE=DATE-TIME:20190226T052000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-701@indico.inp.nsk.su DESCRIPTION:Speakers: Ivan Belyaev (Instriotute for Theoretical and Experi mental Physics. ITEP)\nA large set of data collected by the LHCb experimen t in proton-proton collisions at sqrt{s}=7\,8 and 13TeV allows many precis e measurements for charmonia production and properties\, in particular\, t he precise determination of the masses and the natural widths of several charmonium states.\n\nhttps://indico.inp.nsk.su/event/15/contributions/701 / LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/701/ END:VEVENT BEGIN:VEVENT SUMMARY:Open charm studies at Belle DTSTART;VALUE=DATE-TIME:20190301T075000Z DTEND;VALUE=DATE-TIME:20190301T081000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-702@indico.inp.nsk.su DESCRIPTION:Speakers: Valentina Zhukova (LPI)\nUntil recently\, parameters of vector charmonia lying above the open-charm threshold were determined from the inclusive cross section of the electron-positron annihilation to hadronic final states. However\, the parameters of the resonances obtained this way are model-dependent and they suffer from large uncertainties. On the other hand\, measurements of exclusive cross sections of the e^+e^- a nnihilation to charm hadrons should provide important missing information about strong interaction in this region so that the results of such measur ements are of large interest both for developments of experimental methods \, and theory.\nIn particular\, the aforementioned measurements should she d light on the nature on the charminium states with quantum numbers 1− −\, which are not fully understood yet. Determination of the masses and widths of these resonances in a model-independent way and extraction of th eir coupling constant to elastic open-charm channels will allow to obtain information on the wave functions of the vector charmonia and to verify th e phenomenological models for heavy hadrons.\nNew results are obtained for the exclusive cross sections of the e+e− annihilation into charmed hadr on pairs with initial state radiation. The analysis is based on the data s ample collected with the Belle detector with the integrated luminosity of 951 fb−1. The accuracy of the cross section measurement is increased by a factor of 2 compared with the previous Belle study and\, for the first t ime\, the e+e−→D∗D∗ cross section is decomposed into three compone nts corresponding to different helicities of the D∗’s in the final sta te.\n\nhttps://indico.inp.nsk.su/event/15/contributions/702/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/702/ END:VEVENT BEGIN:VEVENT SUMMARY:Baryon Studies at Belle DTSTART;VALUE=DATE-TIME:20190228T095000Z DTEND;VALUE=DATE-TIME:20190228T101000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-703@indico.inp.nsk.su DESCRIPTION:Speakers: Seongbae Yang (Korea University)\nAlthough 10 years have passed since the last beam time of Belle\, baryon spectroscopy analys is using 980 $\\rm fb^{-1}$ data sample collected by the KEKB $e^{+}e^{-}$ collider near $\\Upsilon$ resonances is still active. Over the last few y ears\, we have discovered new excited $\\Omega$ and $\\Xi$ baryons. In the charmed baryon region\, we observed a doubly Cabbibo-suppressed decay of $\\Lambda_{c}^{+}$ and measured masses and widths of excited $\\Xi_{c}$ ba ryons precisely. In this presentation\, there will be a review of the bary on studies in Belle in recent years. The baryon studies expected from Bell e $\\rm II$ will also be briefly explained.\n\nhttps://indico.inp.nsk.su/e vent/15/contributions/703/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/703/ END:VEVENT BEGIN:VEVENT SUMMARY:Muon-electron scattering at NLO DTSTART;VALUE=DATE-TIME:20190228T032000Z DTEND;VALUE=DATE-TIME:20190228T034000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-704@indico.inp.nsk.su DESCRIPTION:Speakers: Carlo M. Carloni Calame (INFN\, Sezione di Pavia - P avia\, Italy)\nIn this talk\, based on arXiv:1811.06743\, I will review th e NLO electro-weak radiative corrections\nto the $\\mu^\\pm e^-\\to\\mu^\\ pm e^-$ process and discuss their relevance for the MUonE\nexperiment\, pr oposed at CERN.\n\nThe aim of MUonE is the high precision measurement of t he QED running coupling constant\nin the space-like region\, from which th e full hadronic contribution can be extracted and used to\nprovide a new a nd independent determination of the leading-order hadronic correction to t he muon $g-2$.\n\nIn this context\, the required accuracy demands that rad iative corrections are accounted for at the the highest level of precision and implemented into a Monte Carlo event generator for data analysis. The first step towards the final goal of theoretical precision\, which will r equire the full set of NNLO corrections and resummation of higher orders\, is the inclusion of NLO electro-weak corrections.\n\nhttps://indico.inp.n sk.su/event/15/contributions/704/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/704/ END:VEVENT BEGIN:VEVENT SUMMARY:Methods of parameterization of amplitudes and extraction of resona nces\, D-decay amplitudes DTSTART;VALUE=DATE-TIME:20190226T091000Z DTEND;VALUE=DATE-TIME:20190226T093000Z DTSTAMP;VALUE=DATE-TIME:20260306T055934Z UID:indico-contribution-15-705@indico.inp.nsk.su DESCRIPTION:Speakers: Robert Kaminski (Institute of Nuclear Physics PAS)\n Various necessary conditions which two-body amplitudes (e.g. FSI) must mee t will be presented and discussed.\nMethods of extraction of resonances fr om these amplitudes will be studied and examples of different results will be presented.\nThe advantages and disadvantages of these methods will be analyzed and the methods that meet the necessary mathematical conditions a nd are convenient to describe the data will be shown.\nExample of Dalitz p lot analysis for three body D decay with unitary two body amplitudes will be presented.\n\nhttps://indico.inp.nsk.su/event/15/contributions/705/ LOCATION: Conference room URL:https://indico.inp.nsk.su/event/15/contributions/705/ END:VEVENT END:VCALENDAR