A critical analysis of one-loop neutrino mass models with minimal dark matter

Ahriche, Amine and McDonald, Kristian and Nasri, Salah and Picek, Ivica (2016) A critical analysis of one-loop neutrino mass models with minimal dark matter. Physics Letters B, 757. pp. 399-404. ISSN 0370-2693

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Abstract

A recent paper investigated minimal R ν MDM models with the type T1-iii and T3 one-loop topologies. However, the candidate most-minimal model does not possess an accidental symmetry – the scalar potential contains an explicit symmetry breaking term, rendering the dark matter unstable. We present two models that cure this problem. However, we further show that all of the proposed minimal one-loop R ν MDM models suffer from a second problem – an additional source of explicit Z2 symmetry breaking in the Yukawa sector. We perform a more-general analysis to show that neutrino mass models using either the type T3 or type T1-iii one-loop topologies do not give viable minimal dark matter candidates. Consequently, one-loop models of neutrino mass with minimal dark matter do not appear possible. Thus, presently there remains a single known (three-loop) model of neutrino mass that gives stable dark matter without invoking any new symmetries.

Item Type: Article
Keywords: neutrino mass, neutrino model, dark matter
Date: 2016
Subjects: NATURAL SCIENCES > Physics
Additional Information: © 2016 Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. Received 16 March 2016. Received in revised form 8 April 2016. Accepted 9 April 2016. Available online 13 April 2016.
Divisions: Faculty of Science > Department of Physics
Project code: IP-2013-11-8799
Publisher: Elsevier
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 11 Sep 2017 12:13
Last Modified: 11 Sep 2017 13:42
URI: http://digre.pmf.unizg.hr/id/eprint/4974

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