Lepton-flavour violation in hadronic tau decays and $\mu -\tau$ conversion in nuclei

Abstract

Within the Standard Model Effective Field Theory framework, with operators up to dimension 6, we perform a model-independent analysis of the lepton-flavour-violating processes involving tau leptons. Namely, we study hadronic tau decays and $\ell$--$\tau$ conversion in nuclei, with $\ell =e,\mu$. Based on available experimental limits, we establish constraints on the Wilson coefficients of the operators contributing to these processes. Our work paves the way to extract the related information from Belle II and foreseen future experiments.

arXiv comment49 pages, 12 figures

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• Charged Lepton Flavor Violation at the EIC
• Completeness and Complementarity for $\mu \to e\gamma$, $\mu \to 3e$ and $\mu \to e$ conversion
• Introduction to Charged Lepton Flavour Violation
• Searches for Lepton Flavor Violation in Tau Decays at Belle II
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• Nonperturbative effects in neutrino magnetic moments
• Quasi-Dirac neutrinos in the linear seesaw model
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