Four-jet final state in same-sign lepton colliders and neutrinoless double beta decay mechanisms

TL;DR

This paper explores how future same-sign lepton colliders could help identify mechanisms behind neutrinoless double beta decay by detecting four-jet final states, complementing LHC signatures.

Contribution

It demonstrates the potential of four-jet signals at linear colliders to distinguish neutrinoless double beta decay mechanisms within a supersymmetric framework.

Findings

Four-jet signals are promising for probing decay mechanisms.

Complementarity between collider signatures enhances understanding.

Future colliders can provide crucial insights into lepton number violation.

Abstract

If neutrinoless double beta decay is observed, it will be important to understand the mechanism(s) behind this process. Using a minimal supersymmetric extension to the Standard Model in association with a lepton number violating coupling as an example, we show that if neutrinoless double beta decay is mediated by new TeV scale particles, looking for four-jet final states in future linear colliders operating in the same-sign electron mode could provide important information on the underlying mechanisms. We study the prospects for observing this process at the proposed ILC and CLIC energies, and discuss the complementarity between such a four-jet signal and other collider signatures at the LHC.