Flavour and precision probes of a class of scotogenic models

TL;DR

This paper investigates how a specific class of scotogenic models affects flavour physics and precision electroweak measurements, including detailed NLO calculations and implications for future collider Higgs decay measurements.

Contribution

It provides a comprehensive NLO analysis of leptonic Higgs and Z decays in a particular scotogenic model, revisiting constraints and exploring collider prospects.

Findings

NLO corrections significantly impact decay observables.

Revised constraints on model parameters due to muon g-2 tension.

Future collider Higgs decay measurements can probe these models.

Abstract

We address the phenomenological impact of a well-motivated class of scotogenic models regarding flavour and electroweak precision observables. In particular, and for the case of a ``T1-2-A'' variant, we carry out a full computation of the next-to-leading order corrections to leptonic Higgs and $Z$-boson decays. In view of the evolution in the tension between theory and observation regarding the anomalous magnetic moment of the muon, we revisit previously drawn conclusions on operator dominance and constraints on the parameter space. Finally, we consider the role of $H \to \mu\mu$ decays (and other flavour conserving Higgs decays) in probing this class of models at future colliders.