BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN 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:20260711T234320Z UID:indico-contribution-90-631@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:QCD effects in searches for GeV-scale new physics. DTSTART;VALUE=DATE-TIME:20190228T073000Z DTEND;VALUE=DATE-TIME:20190228T075000Z DTSTAMP;VALUE=DATE-TIME:20260711T234320Z UID:indico-contribution-90-639@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: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:20260711T234320Z UID:indico-contribution-90-648@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:New Physics Beyond the SM at BESIII DTSTART;VALUE=DATE-TIME:20190228T075000Z DTEND;VALUE=DATE-TIME:20190228T081000Z DTSTAMP;VALUE=DATE-TIME:20260711T234320Z UID:indico-contribution-90-656@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:Recent results of the NA64 experiment at the CERN SPS DTSTART;VALUE=DATE-TIME:20190228T081000Z DTEND;VALUE=DATE-TIME:20190228T083000Z DTSTAMP;VALUE=DATE-TIME:20260711T234320Z UID:indico-contribution-90-667@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:Search for dark forces at KLOE-2 DTSTART;VALUE=DATE-TIME:20190228T052000Z DTEND;VALUE=DATE-TIME:20190228T054000Z DTSTAMP;VALUE=DATE-TIME:20260711T234320Z UID:indico-contribution-90-672@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: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:20260711T234320Z UID:indico-contribution-90-684@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 END:VCALENDAR