Asymptotically safe extensions of the Standard Model with flavour phenomenology

TL;DR

This paper explores extensions of the Standard Model that are asymptotically safe, introducing new matter fields like scalars and fermions, and examines their phenomenological implications including potential explanations for anomalies in lepton magnetic moments.

Contribution

It proposes asymptotically safe Standard Model extensions with new matter fields that can address lepton magnetic moment discrepancies.

Findings

BSM contributions can explain electron and muon magnetic moment anomalies.

New matter fields induce observable effects in lepton flavor violation and Drell-Yan processes.

Extensions remain consistent with current experimental constraints.

Abstract

We investigate asymptotically safe extensions of the Standard Model with new matter fields arising in the TeV energy range. The new sector contains singlet scalars and vector-like fermions in representations which permit Yukawa interactions with the Standard Model leptons. Phenomenological implications are explored including charged lepton flavour violation, Drell-Yan processes and lepton anomalous magnetic moments. For the latter, we find that BSM contributions can be sizeable enough to explain the present experimental discrepancies of the electron and muon anomalous magnetic moments with the Standard Model.