LHC Search for Right-handed Neutrinos in $Z^\prime$ Models

TL;DR

This paper proposes a new, model-independent method to search for right-handed neutrinos in $Z'$ models at the LHC, improving sensitivity by reconstructing neutrino mass from same-sign muon pairs.

Contribution

It introduces a novel analysis technique for RH neutrino detection that enhances sensitivity and applies it within a specific $U(1)_{(B-L)_{3}}$ model for HL-LHC.

Findings

Potential to probe RH neutrino masses from 0.2 to 1.1 TeV at HL-LHC

Model-independent analysis improves detection sensitivity

Reconstruction of RH neutrino mass enhances search effectiveness

Abstract

We consider right-handed neutrino pair production in generic $Z^\prime$ models. We propose a new, model-independent analysis using final states containing a pair of same-sign muons. A key aspect of this analysis is the reconstruction of the RH neutrino mass, which leads to a significantly improved sensitivity. Within the $U(1)_{(B-L)_{3}}$ model, we find that at the HL-LHC it will be possible to probe RH neutrino masses in the range $0.2\lesssim M_{N_R} \lesssim 1.1\,$TeV.