Rare tau Decays in R-parity Violating Supersymmetry

TL;DR

This paper uses rare tau decay processes to set new constraints on R-parity violating supersymmetric couplings, updating and expanding existing bounds with recent data.

Contribution

It provides updated and new bounds on R-parity violating couplings from various rare tau decay channels, enhancing the understanding of supersymmetry constraints.

Findings

Updated bounds on $ au o l M$ decays.

New limits on $ au o l_i l_j l_k$ processes.

Constraints on $ au o l \gamma$ decay modes.

Abstract

We constrain, from rare tau decays, several combinations of $\lambda$ and $\lambda'$ type couplings coming from Supersymmetry without R-parity. The processes that we consider are tau --> l M, tau --> l_i l_j l_k, and tau --> l gamma, where l stands for either e or mu, and M is the generic symbol for a meson. We update several existing bounds, and provide a few new ones too.