Abstract
We propose that weak scale leptogenesis via scale right-handed neutrinos could be possible if their couplings had transitory larger values in the early Universe. The requisite lifted parameters can be attained if a light scalar is displaced a long distance from its origin by the thermal population of fermions that become massive before electroweak symmetry breaking. The fermion can be a viable dark matter candidate; for suitable choice of parameters, the light scalar itself can be dark matter through a misalignment mechanism. We find that a two-component dark matter population made up of both and is a typical outcome in our framework.
- Received 27 April 2022
- Accepted 8 July 2022
DOI:https://doi.org/10.1103/PhysRevD.106.035006
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society