A Model of Neutrino and Higgs Physics at the Electroweak Scale

TL;DR

This paper proposes a model extending the Standard Model with a lepton number violating scalar and right-handed neutrinos at the electroweak scale, predicting unique Higgs decay signatures for neutrino physics exploration.

Contribution

It introduces a novel electroweak scale neutrino and Higgs physics model with lepton number violation, avoiding new high-energy scales and predicting distinctive Higgs decay signatures.

Findings

Higgs decay $H o u u$ differs from Standard Model predictions

Model constrains new physics to the electroweak scale

Potential for experimental detection of new neutrino signatures

Abstract

We present and explore the Higgs physics of a model that in addition to the Standard Model fields includes a lepton number violating singlet scalar field. Based on the fact that the only experimental data we have so far for physics beyond the Standard Model is that of neutrino physics, we impose a constraint for any addition not to introduce new higher scales. As such, we introduce right-handed neutrinos with an Electroweak Scale mass. We study the Higgs decay $H \to \nu \nu$ and show that it leads to different signatures compared to those in the Standard Model, making it possible to detect them and to probe the nature of their couplings.