Optimal observables as a probe of CP violation in the process

A possible CP violation effects in neutral currents are predicted in a wide class of theories Beyond the Standard Model (BSM). If such a violation will be discovered, it may shed light on the problem of the baryon asymmetry of the Universe. In this paper, an Effective Field Theory (EFT) approach is...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1690; no. 1
Main Authors Belyaev, N L, Soldatov, E Y
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 16.12.2020
Subjects
CP violation
Field theory
Matter & antimatter
Neutral currents
Physics
Standard model (particle physics)
Transverse momentum
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Summary:A possible CP violation effects in neutral currents are predicted in a wide class of theories Beyond the Standard Model (BSM). If such a violation will be discovered, it may shed light on the problem of the baryon asymmetry of the Universe. In this paper, an Effective Field Theory (EFT) approach is used to parameterize the BSM Zγ interaction. The optimal observables technique is applied to probe the CP-even and CP-odd anomalous EFT operator within the NTGC phenomenological model. Additional cut requirements on the photon transverse momentum pT were considered in order to enhance the possible BSM signal.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1690/1/012168