Neutrino mass models at TRISTAN

P. S. Bhupal Dev; Julian Heeck; Anil Thapa

doi:10.1140/epjc/s10052-024-12496-0

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2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2024) 84: 148
https://doi.org/10.1140/epjc/s10052-024-12496-0

Regular Article - Theoretical Physics

Neutrino mass models at $μ$ $\mu$ TRISTAN

P. S. Bhupal Dev¹, Julian Heeck² and Anil Thapa²^c

¹ Department of Physics and McDonnell Center for the Space Sciences, Washington University, 63130, St. Louis, MO, USA
² Department of Physics, University of Virginia, 22904-4714, Charlottesville, VA, USA

^c wtd8kz@virginia.edu

Received: 31 October 2023
Accepted: 29 January 2024
Published online: 10 February 2024

Abstract

We study the prospects of probing neutrino mass models at the newly proposed antimuon collider $μ$ $\mu$ TRISTAN, involving $μ^{+} e^{-}$ $\mu ^+e^-$ scattering at $\sqrt{s} = 346 GeV$ $\sqrt{s}= 346~\text {GeV}$ and $μ^{+} μ^{+}$ $\mu ^+\mu ^+$ scattering at $\sqrt{s} = 2 TeV .$ $\sqrt{s}= 2~\text {TeV}.$ We show that $μ$ $\mu$ 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.

© The Author(s) 2024

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