Leptogenesis enabled by dark matter

Croon, Djuna; Davoudiasl, Hooman; Houtz, Rachel

doi:10.1103/physrevd.106.035006

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Authors

Dr Djuna Lize Croon djuna.l.croon@durham.ac.uk
Assistant Professor

Hooman Davoudiasl

Dr Rachel Houtz rachel.houtz@durham.ac.uk
Post Doctoral Research Associate

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

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Advance online version 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.