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arXiv · 1310.3183

Radiative Neutrino Mass with Scotogenic Scalar Triplet

Vedran Brdar·Ivica Picek·Branimir Radovcic
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Abstract

We present 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 Z_2 symmetry, and the third in which this Z_2 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 Z_2-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.

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Vedran Brdar, Ivica Picek, Branimir Radovcic. 2013-12-20. Radiative Neutrino Mass with Scotogenic Scalar Triplet. https://doi.org/10.1016/j.physletb.2013.11.045

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