Abstract
We propose a minimal model where a dark sector seeds neutrino mass generation radiatively within the linear seesaw mechanism. Neutrino masses are calculable, since tree-level contributions are forbidden by symmetry. They arise from spontaneous lepton number violation by a small Higgs triplet vacuum expectation value. Lepton flavour violating processes e.g. μ → eγ can be sizeable, despite the tiny neutrino masses. We comment also on dark-matter and collider implications.
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Acknowledgments
AECH has received funding from Chilean grants ANID-Chile FONDECYT 1210378, ANID PIA/APOYO AFB220004, ANID Programa Milenio code ICN2019_044. V.K.N. is supported by ANID-Chile Fondecyt Postdoctoral grant 3220005. The work of J.V. is supported by the Spanish grants PID2020-113775GB-I00 (AEI/10.13039/501100011033) and Prometeo CIPROM/2021/054 (Generalitat Valenciana).
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Hernández, A.E.C., Vishnudath, K.N. & Valle, J.W.F. Linear seesaw mechanism from dark sector. J. High Energ. Phys. 2023, 46 (2023). https://doi.org/10.1007/JHEP09(2023)046
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DOI: https://doi.org/10.1007/JHEP09(2023)046