Studying $\Delta L=2$ Lepton Flavor Violation with Muons

TL;DR

This paper reviews searches for lepton flavor violation involving muons, focusing on processes that violate muon flavor conservation by two units, which could indicate new physics beyond the standard model.

Contribution

It provides a comprehensive review of experimental and theoretical efforts to detect $elta L=2$ lepton flavor violation with muons and muonium-antimuonium oscillations.

Findings

Current experimental limits on $elta L=2$ processes are highly suppressed.

Observation of such processes would signal new physics beyond the standard model.

The review highlights promising future directions for detecting lepton flavor violation.

Abstract

Flavor violating processes in the lepton sector have highly suppressed branching ratios in the standard model. Thus, observation of lepton flavor violation (LFV) constitutes a clear indication of physics beyond the standard model (BSM). We review new physics searches in the processes that violate the conservation of lepton (muon) flavor by two units with muonia and muonium--antimuonium oscillations.