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BEGIN:VEVENT
SUMMARY:Baryon form factors at BESIII
DTSTART;VALUE=DATE-TIME:20190228T085000Z
DTEND;VALUE=DATE-TIME:20190228T091000Z
DTSTAMP;VALUE=DATE-TIME:20260712T000135Z
UID:indico-contribution-93-598@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:The proton size radius: experiment vs theory
DTSTART;VALUE=DATE-TIME:20190228T103000Z
DTEND;VALUE=DATE-TIME:20190228T105000Z
DTSTAMP;VALUE=DATE-TIME:20260712T000135Z
UID:indico-contribution-93-633@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: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:20260712T000135Z
UID:indico-contribution-93-601@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:The NNbar and multihadron production at the threshold at VEPP2000
DTSTART;VALUE=DATE-TIME:20190228T093000Z
DTEND;VALUE=DATE-TIME:20190228T095000Z
DTSTAMP;VALUE=DATE-TIME:20260712T000135Z
UID:indico-contribution-93-630@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: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:20260712T000135Z
UID:indico-contribution-93-693@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:COMPASS++/AMBER and the Proton Radius Puzzle
DTSTART;VALUE=DATE-TIME:20190228T101000Z
DTEND;VALUE=DATE-TIME:20190228T103000Z
DTSTAMP;VALUE=DATE-TIME:20260712T000135Z
UID:indico-contribution-93-698@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:Baryon Studies at Belle
DTSTART;VALUE=DATE-TIME:20190228T095000Z
DTEND;VALUE=DATE-TIME:20190228T101000Z
DTSTAMP;VALUE=DATE-TIME:20260712T000135Z
UID:indico-contribution-93-703@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/
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