One-loop corrections to light neutrino masses in gauged U(1) extensions of the standard model

TL;DR

This paper calculates one-loop quantum corrections to light neutrino masses in U(1) extended models, ensuring gauge independence and providing a general correction formula applicable to various extensions.

Contribution

It introduces a general formula for gauge-independent one-loop neutrino mass corrections in U(1) extensions of the standard model.

Findings

Explicit cancellation of gauge-dependent terms demonstrated.

Provides a formula applicable to multiple U(1) extensions.

Estimates of correction sizes in the super-weak model.

Abstract

We consider gauged U(1) extensions of the standard model of particle physics with three right-handed sterile neutrinos and a singlet scalar. The neutrinos obtain mass via the type I seesaw mechanism. We compute the one loop corrections to the elements of the tree level mass matrix of the light neutrinos and show explicitly the cancellation of the gauge dependent terms. We present a general formula for the gauge independent, finite one-loop corrections for arbitrary number new U(1) groups, new complex scalars and sterile neutrinos. We estimate the size of the corrections relative to the tree level mass matrix in a particular extension, the super-weak model.