Dark Matter as a Source for Lepton Flavor Violation

TL;DR

This paper investigates the potential role of dark matter particles as sources of charged lepton flavor violation, analyzing parameter space compatible with current bounds and future experimental sensitivities.

Contribution

It introduces a model linking dark matter to lepton flavor violation and identifies parameter regions consistent with existing constraints and upcoming experimental signals.

Findings

Identifies parameter space where dark matter explains lepton flavor violation signals.

Computes relic density and scattering cross sections consistent with collider and detection bounds.

Suggests future experiments could detect signals from this dark matter scenario.

Abstract

We will witness enormous progress in the experimental sensitivity to charged-lepton-violation processes in the near future. New physics signals of charged lepton violation might be around the corner without conflicting with existing astrophysical and accelerator bounds. In this work, we explore the possibility of having a dark matter particle as a source for $\mu\to e \gamma$, $\mu \to 3e$, and $\mu\to e$ conversion in nuclei. After computing the dark matter relic density and dark matter-nucleon scattering cross section, we outline the region of parameter space where one can simultaneously accommodate a dark matter fermion in agreement with existing collider and direct detection bounds, and positive signals in charged lepton violation observables.