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SUMMARY:Prospects of search for CP-violating effects of neutral triple gau
 ge couplings at the LHC
DTSTART;VALUE=DATE-TIME:20241025T063000Z
DTEND;VALUE=DATE-TIME:20241025T064500Z
DTSTAMP;VALUE=DATE-TIME:20260306T211533Z
UID:indico-contribution-4358@cern.ch
DESCRIPTION:Speakers: Artur Semushin (NRNU MEPhI)\nThe main goal of modern
  experiments in high-energy-physics area is to find deviations from the St
 andard Model (SM)\, which describe data well but is expected to be extende
 d to a more general theory. Anomalous coupling approach provides a possibi
 lity to look for a wide range of new physics effects in different experime
 ntal signatures thanks for its model-independence. In this work the neutra
 l triple gauge couplings (nTGCs) are considered in $ZZ(\\ell\\ell\\nu\\nu)
 $ and $Z(\\ell\\ell)\\gamma$ channels\, and effective field theory is used
  to parameterize these couplings in the Lagrangian. NTGCs are triple inter
 actions between $Z$ bosons and photons\, and some of them violate CP. Ofte
 n constraints on CP-violating nTGCs are set basing on CP-conserving effect
 s\, and therefore CP violation is not probed in these studies. This work p
 resents a study of CP-sensitive variables in the aforementioned channels u
 sing special angular variables and matrix-element-based optimal observable
 s. Basing on these variables\, one- and two-dimensional expected limits on
  the nTGCs are set for the conditions of Run3 at LHC experiments. This stu
 dy shows the possibility to search for CP-violation using nTGC framework a
 nd special CP-sensitive variables. These variables also can be used in oth
 er channels and with different parameterizations of the Lagrangian.\n\nhtt
 ps://indico.particle.mephi.ru/event/436/contributions/4358/
LOCATION: Petrovskiy 2
URL:https://indico.particle.mephi.ru/event/436/contributions/4358/
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