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Dark matter and leptogenesis linked by classical scale invariance

Khoze, Valentin V.; Plascencia, Alexis D.

Dark matter and leptogenesis linked by classical scale invariance Thumbnail


Authors

Alexis D. Plascencia



Abstract

In this work we study a classically scale invariant extension of the Standard Model that can explain simultaneously dark matter and the baryon asymmetry in the universe. In our set-up we introduce a dark sector, namely a non-Abelian SU(2) hidden sector coupled to the SM via the Higgs portal, and a singlet sector responsible for generating Majorana masses for three right-handed sterile neutrinos. The gauge bosons of the dark sector are mass-degenerate and stable, and this makes them suitable as dark matter candidates. Our model also accounts for the matter-anti-matter asymmetry. The lepton flavour asymmetry is produced during CP-violating oscillations of the GeV-scale right-handed neutrinos, and converted to the baryon asymmetry by the electroweak sphalerons. All the characteristic scales in the model: the electro-weak, dark matter and the leptogenesis/neutrino mass scales, are generated radiatively, have a common origin and related to each other via scalar field couplings in perturbation theory.

Journal Article Type Article
Acceptance Date Oct 9, 2016
Online Publication Date Nov 7, 2016
Publication Date Nov 7, 2016
Deposit Date Dec 5, 2016
Publicly Available Date Dec 6, 2016
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2016
Issue 11
Article Number 025
DOI https://doi.org/10.1007/jhep11%282016%29025
Public URL https://durham-repository.worktribe.com/output/1399065
Related Public URLs https://arxiv.org/pdf/1605.06834.pdf

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Copyright Statement
Open Access, © The Authors. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.






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