[Moller] Dissecting Lepton Number Violation in the Left-Right Symmetric Model: decay, Møller scattering, and collider searches

[Jay Benesch]

http://arxiv.org/abs/2408.06306

Dissecting Lepton Number Violation in the Left-Right Symmetric Model:   decay, Møller scattering, and collider searches
Gang Li, Michael J. Ramsey-Musolf, Sebastián Urrutia Quiroga, Juan Carlos Vasquez

    In the context of the left-right symmetric model, we study the interplay of neutrinoless double beta ( ) decay, parity-violating Møller scattering, and high-energy colliders, resulting from the Yukawa interaction of the right-handed doubly-charged scalar to electrons, which could evade the severe constraints from charged lepton flavor violation. The   decay amplitude receives additional contributions from right-handed sterile neutrinos. The half-life, calculated in the effective field theory (EFT) framework, allows for an improved description of the contributions involving non-zero mixing between left- and right-handed   bosons and those arising from exchanging a light right-handed neutrino. We find that the relative sensitivities between the low-energy (or high-precision) and high-energy experiments are affected by the left-right mixing. On the other hand, our results show how the interplay of collider and low-energy searches provides a manner to explore regions that are inaccessible to   decay experiments. 

Comments: 	12 pages, 7 figures
Subjects: 	High Energy Physics - Phenomenology (hep-ph); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)