Radiative Left-Right Dirac Neutrino Mass

TL;DR

This paper explores novel one-loop radiative mechanisms for generating Dirac neutrino masses within a left-right symmetric model without a scalar bidoublet, identifying two new scenarios with testable predictions.

Contribution

It introduces two new radiative Dirac neutrino mass generation scenarios in a left-right model, expanding beyond previously known mechanisms.

Findings

Identified two new testable scenarios for neutrino mass generation.

Systematic analysis of one-loop radiative mechanisms without scalar bidoublet.

Comparison with classical models showing novel features.

Abstract

We consider the conventional left-right gauge extension of the standard model of quarks and leptons without a scalar bidoublet. We study systematically how one-loop radiative Dirac neutrino masses may be obtained. In addition to two well-known cases from almost 30 years ago, we find two new scenarios with verifiable predictions.