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SUMMARY:Combination of anomalous quartic gauge coupling searches with full
  ATLAS Run II dataset
DTSTART;VALUE=DATE-TIME:20261030T064500Z
DTEND;VALUE=DATE-TIME:20261030T070000Z
DTSTAMP;VALUE=DATE-TIME:20261022T014155Z
UID:indico-contribution-6183@cern.ch
DESCRIPTION:Speakers: Artur Semushin (A. Alikhanyan National Science Labor
 atory (Yerevan Physics Institute))\nData provided by the LHC enable search
 es for a variety of new particles\, but no deviations from the SM have bee
 n found. Therefore\, these studies are supplemented by indirect searches f
 or new physics in the same data\, assuming that new particles are inaccess
 ible. Anomalous quartic gauge couplings can arise in diverse physics model
 s\; limits on the coupling parameters are related to constraints on new ph
 ysics model. Searches for these coupling manifestations have been carried 
 out in different final states using data collected by the ATLAS detector i
 n 2015-2018. This report presents the results of the combination of variou
 s analyses of vector-boson scattering and a triboson study. This work is n
 ot only the first combination\, but also the most comprehensive study of a
 nomalous quartic gauge couplings. It provides confidence intervals for sce
 narios with one or two non-zero parameters at a time as well as a treatmen
 t of theory unitarity and positivity bounds. Confidence limits with all co
 upling parameters being non-zero simultaneously are also set.\n\nhttps://i
 ndico.particle.mephi.ru/event/626/contributions/6183/
LOCATION:Sevastopol Hotel
URL:https://indico.particle.mephi.ru/event/626/contributions/6183/
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