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arXiv · 2211.10059

Low-scale leptogenesis and dark matter in a three-loop radiative seesaw model

Osamu Seto·Tetsuo Shindou·Takanao Tsuyuki
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Abstract

We show that three open questions in particle physics and cosmology: the origin of neutrino mass, the identity of dark matter, and the origin of the baryon asymmetry of the universe can be explained simultaneously in the three-loop seesaw model proposed by Krauss, Nasri, and Trodden. We discuss the difficulty of successful leptogenesis with three right-handed neutrinos, and we propose a scenario with four right-handed neutrinos that satisfies all observational constraints. This scenario predicts a sleptonlike particle as light as a few hundreds GeV that can be probed by future collider experiments.

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Osamu Seto, Tetsuo Shindou, Takanao Tsuyuki. 2022-11-18. Low-scale leptogenesis and dark matter in a three-loop radiative seesaw model. https://doi.org/10.1103/physrevd.108.055002

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