Scotogenic neutrino mass with large $SU(2)_L$ multiplet fields

TL;DR

This paper proposes a novel scotogenic neutrino mass model using large $SU(2)_L$ multiplet fields, generating neutrino masses at one-loop level without extra symmetry, and explores collider phenomenology of the new particles.

Contribution

It introduces a new neutrino mass generation mechanism with large multiplet fields and analyzes its phenomenological implications at colliders.

Findings

Neutrino masses generated at one-loop level with large multiplet fields.

Predictions for production and decay of quintet fermions at LHC.

Potential discovery prospects at 14 TeV and 27 TeV colliders.

Abstract

We construct a scotogenic neutrino mass model introducing large $SU(2)_L$ multiplet fields without adding an extra symmetry. We have introduced extra scalar fields such as a septet, quintet and quartet where we make the vacuum expectation value of quartet scalar to be zero while septet and quintet develop non-zero ones. Then the neutrino mass is generated at one-loop level by introducing quintet fermion. We analyze the neutrino mass matrix taking constraints from lepton flavor violation into account and discuss collider physics regarding charged fermions from large multiplet fields. We have analysed the production and the decays of the quintet fermions, as well as the discovery reach at 14 TeV and 27 TeV LHC.