Impact of semi-annihilation of ℤ3symmetric dark matter with radiative neutrino masses

Aoki, Mayumi; Toma, Takashi

Abstract

We investigate a Bbb Z3 symmetric model with two-loop radiative neutrino masses. Dark matter in the model is either a Dirac fermion or a complex scalar as a result of an unbroken Bbb Z3 symmetry. In addition to standard annihilation processes, semi-annihilation of the dark matter contributes to the relic density. We study the effect of the semi-annihilation in the model and find that those contributions are important to obtain the observed relic density. The experimental signatures in dark matter searches are also discussed, where some of them are expected to be different from the signatures of dark matter in Bbb Z2 symmetric models.

Citation

Aoki, M., & Toma, T. (2014). Impact of semi-annihilation of ℤ3symmetric dark matter with radiative neutrino masses. Journal of Cosmology and Astroparticle Physics, 2014(09), Article 016. https://doi.org/10.1088/1475-7516/2014/09/016

• Journal Article Type: Article
• Acceptance Date: Aug 17, 2014
• Online Publication Date: Sep 8, 2014
• Publication Date: Sep 30, 2014
• Deposit Date: Apr 23, 2019
• Publicly Available Date: Apr 23, 2019
• Journal: Journal of Cosmology and Astroparticle Physics
• Electronic ISSN: 1475-7516
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 2014
• Issue: 09
• Article Number: 016
• DOI: https://doi.org/10.1088/1475-7516/2014/09/016
• Public URL: https://durham-repository.worktribe.com/output/1303358