Lepton flavor violating Z boson decays induced by scalar unparticle

TL;DR

This paper predicts the branching ratios of lepton flavor violating Z boson decays mediated by scalar unparticles, showing they can reach observable levels depending on unparticle parameters.

Contribution

It introduces a novel calculation of LFV Z decays via scalar unparticles, highlighting the dependence on unparticle scaling dimension and potential observability.

Findings

Branching ratios can reach 10^{-8} for certain parameters.

Decay rates are highly sensitive to unparticle scaling dimension.

Predictions suggest possible experimental detection in future colliders.

Abstract

We predict the branching ratios of the lepton flavor violating Z boson decays Z\to e^{\pm} \mu^{\pm}, Z\to e^{\pm} \tau^{\pm} and Z\to \mu^{\pm} \tau^{\pm} in the case that the lepton flavor violation is carried by the scalar unparticle mediation. We observe that their BRs are strongly sensitive to the unparticle scaling dimension and the branching ratios can reach to the values of the order of 10^{-8}, for the heavy lepton flavor case, for the small values of the scaling dimension.