Probing sterile neutrinos in the framework of inverse seesaw mechanism through leptoquark productions

TL;DR

This paper explores how an extended inverse seesaw model with leptoquarks can produce detectable collider signatures, especially involving multiple leptons and jets, to probe sterile neutrinos at higher mass scales.

Contribution

It introduces a novel inverse seesaw extension with leptoquarks that enhances right-handed neutrino production and proposes specific collider signatures to distinguish this scenario from traditional models.

Findings

Enhanced right-handed neutrino production compared to standard inverse seesaw.

Collider signatures with three or more leptons and multiple jets can probe larger neutrino masses.

A proposed same-sign dilepton signal can differentiate this model from conventional inverse seesaw scenarios.

Abstract

We consider an extension of the Standard Model (SM) augmented by two neutral singlet fermions per generation and a leptoquark. In order to generate the light neutrino masses and mixing, we incorporate inverse seesaw mechanism. The right handed neutrino production in this model is significantly larger than the conventional inverse seesaw scenario. We analyze the different collider signatures of this model and find that the final states associated with three or more leptons, multi jet and at least one b-tagged and (or) $\tau$-tagged jet can probe larger RH neutrino mass scale. We have also proposed a same-sign dilepton signal region associated with multiple jets and missing energy that can be used to distinguish the the present scenario from the usual inverse seesaw extended SM.