Testing lepton number violation with the reaction e,e -> mu, nu, q, q

TL;DR

This paper explores using the e,e->mu, nu, q, q reaction at electron colliders to detect lepton number violation caused by singly charged scalars, potentially excluding masses up to 2 TeV.

Contribution

It proposes a novel method to test lepton number violation via a specific reaction at electron colliders, extending the search for charged scalars beyond current thresholds.

Findings

Reaction observable below scalar mass threshold

Mass of charged scalars can be excluded up to 2 TeV at 500 GeV energy

Sensitivity depends on Yukawa coupling values

Abstract

We investigate the reaction e,e->mu, nu, q, q as a possible place to test the lepton number violating interactions of singly charged scalars (Delta(L)) belonging to a SU(2)L triplet. The existence of such scalars is predicted by some majoron models, as well as by the left-right symmetric extension of the Standard Model. We show that this reaction may be observed in ee collision well below the threshold of (Delta(L)). For the colliding energy E=500 GeV the mass of the singly charged Higgs triplet may be excluded up to 2 TeV and even more, depending on values of the appropriate Yukawa couplings.