Leptophilic Portals to New Physics at Colliders

TL;DR

This paper explores how collider experiments can detect lepton flavor violation signals arising from exotic Higgs decays and leptophilic portals, offering a complementary approach to low-energy LFV searches.

Contribution

It introduces the potential of collider-based searches for LFV through leptophilic portals and exotic Higgs decays, expanding the scope of new physics detection methods.

Findings

Collider searches can effectively probe LFV signals.

Leptophilic portals provide new avenues for discovering physics beyond the Standard Model.

Exotic Higgs decays could be indicative of LFV processes.

Abstract

Observed neutrino oscillations imply that the global lepton flavor symmetry of the Standard Model must be broken. Therefore, searches for lepton flavor violation (LFV) are promising probes of new physics beyond the Standard Model. High-energy colliders provide a powerful tool to study LFV effects, which are complementary to the low-energy charged LFV searches. Here we discuss the possibility of LFV signals at colliders arising from exotic Higgs decays, and from leptophilic scalar and vector portal scenarios.