Experimental constraints on the neutrino and gauge parameters of the super-weak U(1) extension of the standard model

TL;DR

This paper explores a super-weak U(1) extension of the standard model, analyzing how it can explain neutrino properties, dark matter, and early universe phenomena, while constrained by experimental data and future detection prospects.

Contribution

It provides a detailed analysis of the neutrino sector in the super-weak U(1) model and identifies parameter regions testable by upcoming experiments.

Findings

Constraints on neutrino Yukawa matrices and mixing parameters.

Benchmark points within SHiP and MATHUSLA sensitivity.

Nonstandard neutrino interactions consistent with experimental limits.

Abstract

The super-weak force is a minimal, anomaly-free U(1) extension of the standard model (SM), designed to explain the origin of (i) neutrino masses and mixing matrix elements, (ii) dark matter, (iii) cosmic inflation, (iv) stabilization of the electroweak vacuum and (v) leptogenesis. We discuss the neutrino sector of this model in detail and study the allowed parameter space of the neutrino Yukawa matrices and mixing matrix elements. The model generates nonstandard neutrino interactions, whose allowed experimental limits are used to constrain the parameter space of the model. We provide benchmark points in the relevant parameter space that fall within the sensitivity region of the SHiP and MATHUSLA experiments.