Lepton Flavour Violation Experiments -- Some Recent Developments

TL;DR

Recent developments in lepton flavour violation experiments have enhanced sensitivity through various decay searches, setting stringent limits and ruling out some theoretical models, despite no confirmed signals yet.

Contribution

The paper reviews recent experimental progress in lepton flavour violation searches and discusses implications for theoretical models.

Findings

Stringent limits set on lepton flavour violation parameters

Some theoretical models have been ruled out

No confirmed signals of lepton flavour violation yet

Abstract

Dedicated experiments searching for lepton flavour violation can be performed very sensitively using K-decays and $\mu$-decays as well as neutrinoless double $\beta$-decay and muonium to antimuonium conversion. Although there is no confirmed signal reported yet, stringent limits for parameters in speculative extensions to the standard model can be set. Some models could recently be ruled out.