Charged Lepton Flavor Violation at the High-Energy Colliders: Neutrino Mass Relevant Particles

TL;DR

This paper reviews potential charged lepton flavor violation signals at high-energy colliders arising from neutrino mass models, focusing on various BSM particles and their detectable signatures in future collider experiments.

Contribution

It provides a model-dependent analysis of LFV signals from multiple BSM particles at high-energy colliders, considering current limits and future detection prospects.

Findings

LFV signals depend on effective couplings of BSM particles to leptons.

Heavy neutrino and $W_R$ effects stem from neutrino flavor mixing.

Future colliders could observe LFV signals within current BSM parameter limits.

Abstract

We summarize the potential charged lepton flavor violation (LFV) from neutrino mass relevant models, for instance the seesaw mechanisms. In particular, we study, in a model-dependent way, the LFV signals at the high-energy hadron and lepton colliders originating from the beyond standard model (BSM) neutral scalar $H$, doubly charged scalar $H^{\pm\pm}$, heavy neutrino $N$, heavy $W_R$ boson, and the $Z'$ boson. For the neutral scalar, doubly charged scalar and $Z'$ boson, the LFV signals originate from the (effective) LFV couplings of these particles to the charged leptons, while for the heavy neutrino $N$ and $W_R$ boson, the LFV effects are from flavor mixing in the neutrino sector. We consider current limits on these BSM particles and estimate their prospects at future high-energy hadron and lepton colliders.