$\tau$-Flavour Violation at the LHC

TL;DR

This paper investigates the conditions under which tau flavor violation can be observed at the LHC through specific neutralino decays, within an SU(5) model with a see-saw mechanism, balancing collider signals and rare decay constraints.

Contribution

It identifies the parameter space in an SU(5) see-saw model where tau flavor violation is detectable at the LHC without conflicting with low-energy LFV decay limits.

Findings

Tau flavor violation can be observable at the LHC under certain model conditions.

The model allows coexistence of LHC signals and low predictions for radiative LFV decays.

Conditions for observable tau flavor violation are compatible with cosmologically interesting neutralino relic densities.

Abstract

We study the conditions required for $\chi_2 \to \chi + \tau^\pm \mu^\mp$ decays to yield observable tau flavour violation at the LHC, for cosmologically interesting values of the neutralino relic density. These condition can be achieved in the framework of a SU(5) model with a see-saw mechanism that allows a possible coexistence of a LHC signal a low prediction for radiative LFV decays.