$Z'$s and sterile neutrinos from heterotic string models: exploring $Z'$ mass exclusion limits

TL;DR

This paper examines how sterile neutrinos influence the decay rates and mass exclusion limits of TeV-scale $Z'$ bosons in heterotic string models, providing insights into collider constraints and model parameter space.

Contribution

It introduces the effects of sterile neutrinos on $Z'$ decay rates and mass bounds within heterotic string models, highlighting how these bounds vary with model parameters.

Findings

Sterile neutrinos affect $Z'$ decay rates.

Current LHC $Z'$ mass limits are modified by sterile neutrino presence.

Model parameter variations influence exclusion bounds.

Abstract

We investigate the impact of sterile neutrinos on the decay rate of extra $Z'$s with mass in the TeV range in heterotic string derived models. We explore the impact of sterile neutrinos on the current $Z'$ mass exclusion limits at the LHC, and how these bounds change when the parameter space of this specific class of models is modified.