Lepton flavor violating dark photon

TL;DR

This paper investigates how dark photons could influence lepton flavor physics, deriving constraints on their couplings through magnetic moments, rare decays, and experimental searches for light dark matter.

Contribution

It provides new bounds on non-diagonal dark photon couplings with leptons based on multiple experimental and phenomenological analyses.

Findings

Constraints on dark photon-lepton couplings derived

Implications for lepton anomalous magnetic moments

Prospects for future fixed-target experiments

Abstract

We study possible impact of dark photons on lepton flavor phenomenology. We derive the constraints on non-diagonal dark photon couplings with leptons by analyzing corresponding contributions to lepton anomalous magnetic moments, rare lepton decays and the prospects of fixed-target experiments aiming for search for light dark matter based on missing energy/momentum techniques.