Leptogenesis enabled by dark matter

Croon, Djuna; Davoudiasl, Hooman; Houtz, Rachel

Abstract

We propose that weak scale leptogenesis via ∼10TeV 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 ϕ is displaced a long distance from its origin by the thermal population of fermions X that become massive before electroweak symmetry breaking. The fermion X 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 X and ϕ is a typical outcome in our framework.

Citation

Croon, D., Davoudiasl, H., & Houtz, R. (2022). Leptogenesis enabled by dark matter. Physical Review D, 106(3), https://doi.org/10.1103/physrevd.106.035006

• Journal Article Type: Article
• Acceptance Date: Jul 8, 2022
• Online Publication Date: Aug 5, 2022
• Publication Date: 2022-08
• Deposit Date: Sep 28, 2022
• Publicly Available Date: Sep 29, 2022
• Journal: Physical Review D
• Print ISSN: 2470-0010
• Electronic ISSN: 2470-0029
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 106
• Issue: 3
• DOI: https://doi.org/10.1103/physrevd.106.035006
• Public URL: https://durham-repository.worktribe.com/output/1190760