Radiative neutrino mass with scotogenic scalar triplet

Brdar, Vedran and Picek, Ivica and Radovčić, Branimir (2014) Radiative neutrino mass with scotogenic scalar triplet. Physics Letters B, 728. pp. 198-201. ISSN 0370-2693

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Abstract

We present a radiative one-loop neutrino mass model with hypercharge zero scalar triplet in conjunction with another charged singlet scalar and an additional vectorlike lepton doublet. We study three variants of this mass model: the first one without additional beyond-SM symmetry, the second with imposed DM-stabilizing discrete Z2 symmetry, and the third in which this Z2 symmetry is promoted to the gauge symmetry U(1)D. The two latter cases are scotogenic, with a neutral component of the scalar triplet as a dark matter candidate. In first scotogenic model the Z2-odd dark matter candidate is at the multi-TeV mass scale, so that all new degrees of freedom are beyond the direct reach of the LHC. In second scotogenic setup, with broken U(1)D symmetry the model may have LHC signatures or be relevant to astrophysical observations, depending on the scale of U(1)D breaking.

Item Type: Article
Keywords: neutrino mass, dark matter
Date: 2014
Subjects: NATURAL SCIENCES > Physics
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982930-1016
Publisher: Elsevier
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 11 May 2014 05:45
Last Modified: 11 May 2014 05:45
URI: http://digre.pmf.unizg.hr/id/eprint/1003

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