Lepton Flavor Violation at the Large Hadron Collider

TL;DR

This paper explores the potential to detect lepton flavor violation at the LHC by analyzing tau decay events, proposing a new method to distinguish LFV signals from background noise.

Contribution

It introduces a transfer function technique to model tau decay distributions, enabling the extraction of LFV signals in collider data.

Findings

Feasibility of LFV signal extraction demonstrated

Transfer function effectively models non-LFV tau decay shapes

Method applicable to both tau-mu and tau-e LFV searches

Abstract

We investigate a potential of discovering lepton flavor violation (LFV) at the Large Hadron Collider. A sizeable LFV in low energy supersymmetry can be induced by massive right-handed neutrinos, which can explain neutrino oscillations via the seesaw mechanism. We investigate a scenario where the distribution of an invariant mass of two hadronically decaying taus ($\tauh\tauh$) from $\schizero{2}$ decays is the same in events with or without LFV. We first develop a transfer function using this ditau mass distribution to model the shape of the non-LFV $\tauh\mu$ invariant mass. We then show the feasibility of extracting the LFV $\tauh\mu$ signal. The proposed technique can also be applied for a LFV $\tauh e$ search.