Neutrino mass models at $\mu$TRISTAN

TL;DR

This paper explores how the proposed $mbda$TRISTAN collider can detect specific particles predicted by neutrino mass models, offering sensitivity beyond current experiments and linking collider signals with neutrino properties.

Contribution

It demonstrates the potential of $mbda$TRISTAN to probe leptophilic scalars in various neutrino mass models over a broad parameter space, surpassing existing constraints.

Findings

$mbda$TRISTAN can detect leptophilic scalars in neutrino models.

Collider signals can be correlated with neutrino mixing and lepton flavor violation.

Sensitivity extends beyond current experimental limits.

Abstract

We study the prospects of probing neutrino mass models at the newly proposed antimuon collider $\mu$TRISTAN, involving $\mu^+e^-$ scattering at $\sqrt{s}= 346$ GeV and $\mu^+\mu^+$ scattering at $\sqrt{s}= 2$ TeV. We show that $\mu$TRISTAN is uniquely sensitive to leptophilic neutral and doubly-charged scalars naturally occurring in various neutrino mass models, such as Zee, Zee-Babu, cocktail, and type-II seesaw models, over a wide range of mass and coupling values, well beyond the current experimental constraints. It also allows for the possibility to correlate the collider signals with neutrino mixing parameters and charged lepton flavor violating observables.