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SUMMARY:Searches for new physics with ultra-peripheral collisions at the L
 HC
DTSTART;VALUE=DATE-TIME:20220712T095000Z
DTEND;VALUE=DATE-TIME:20220712T101000Z
DTSTAMP;VALUE=DATE-TIME:20261017T214249Z
UID:indico-contribution-534@events.sinp.msu.ru
DESCRIPTION:Speakers: Nazar Burmasov (Petersburg Nuclear Physics Institute
 )\nUltra-peripheral collisions of heavy ions (UPCs) give a unique opportun
 ity for studies of two-photon interactions in an environment with suppress
 ed hadronic processes and enhanced electromagnetic interactions. Specifica
 lly\, studies of light-by-light scattering process (LbyL) can provide a ne
 w insight on axion-like particles (ALPs) production\, which emerge in a nu
 mber of Standard Model extensions and are proposed as dark matter candidat
 es. LbyL was measured by the ATLAS and CMS collaborations in the mass regi
 on above 5 GeV/$c^2$\, and there is a possibility for the new ALICE 3 expe
 riment to cover the low mass region\, that could possibly explain muon $g-
 2$ discrepancy observed at the Fermilab.\n\nPrecise measurements of the an
 omalous magnetic moments of leptons can be used to probe effects of physic
 s beyond the Standard Model (BSM)\, such as production of supersymmetric p
 articles or composite nature of leptons. Sensitivity to BSM physics of the
  anomalous magnetic moment of the $\\tau$-lepton is predicted to be $\\sim
 $280 times higher than that of the muon\, but the short lifetime makes it 
 impossible to use conventional measurement methods. UPCs are proposed as a
 n alternative tool\, as cross sections of $\\tau$ production are sensitive
  to the anomalous magnetic moment.\n\nIn this contribution\, the prospects
  of LbyL measurements\, ALP searches and tau g-2 studies with ultra-periph
 eral collisions at the LHC will be discussed.\n\nhttps://events.sinp.msu.r
 u/event/8/contributions/534/
LOCATION: НИИЯФ\, ЮК\, 3-13
URL:https://events.sinp.msu.ru/event/8/contributions/534/
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