Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series LPT-PTH
Subjects hep-ph
Date Thursday 28 November 2019
Time 16:00
Institute LPT
Seminar Room 114
Speaker's Last Name Fajfer
Speaker's First Name Svetlana
Speaker's Email Address
Speaker's Institution Institut "Jožef Stefan Ljubljana
Title Muon anomalous magnetic moment in the light of New Physics
Abstract The observed muon anomalous magnetic moment deviates from the Standard Model predictions at the level of 4 sigma. The discrepancy can be explained by the presence of New Physics. The simplest explanation assumes the existence of new scalar or gauge bosons. As an example of new scalars we consider scalar leptoquark contributions. In particular, a mechanism that calls for mixing of two scalar leptoquarks of the same electric charge through the interaction with the Higgs field, where the two leptoquarks separately couple to the quark-muon pairs of opposite chirality structures. Another example is a gauge boson which arrises in the U(1) extension of the SM. The parameter space of such a Z’ model is strongly constrained by the discrepancy between experimental result and theoretical prediction for the muon anomalous magnetic moment.
arXiv Preprint Number

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