An allowed window for heavy neutral leptons below the kaon mass
High Energy Physics - Phenomenology
2021-07-29 v2 Cosmology and Nongalactic Astrophysics
Abstract
The extension of the Standard Model with two gauge-singlet Majorana fermions can simultaneously explain two beyond-the-Standard-model phenomena: neutrino masses and oscillations, as well as the origin of the matter-antimatter asymmetry in the Universe. The parameters of such a model are constrained by the neutrino oscillation data, direct accelerator searches, big bang nucleosynthesis, and requirement of successful baryogenesis. We show that the combination of all these constraints still leaves an allowed region in the parameter space below the kaon mass. This region can be probed by the further searches of NA62, DUNE, or SHiP experiments.
Cite
@article{arxiv.2101.09255,
title = {An allowed window for heavy neutral leptons below the kaon mass},
author = {Kyrylo Bondarenko and Alexey Boyarsky and Juraj Klaric and Oleksii Mikulenko and Oleg Ruchayskiy and Vsevolod Syvolap and Inar Timiryasov},
journal= {arXiv preprint arXiv:2101.09255},
year = {2021}
}
Comments
30 pages, 10 figures