A Natural Scotogenic Model for Neutrino Mass \& Dark Matter

Abstract

In this letter, we propose an extension of the scotogenic model where singlet Majorana particle can be dark matter (DM) without the need of a highly suppressed scalar coupling of the order $O(10^{-10})$. For that, the SM is extended with three singlet Majorana fermions, an inert scalar doublet, and two (a complex and a real) singlet scalars, with a global $Z_4$ symmetry that is spontaneously broken into $Z_2$ at a scale higher than the electroweak one by the vev of the complex singlet scalar. In this setup, the smallness of neutrino mass is achieved via the cancellation between three diagrams a la scotogenic, a DM candidate that is viable for a large mass range; and the phenomenology is richer than the minimal scotogenic model.

arXiv comment12 pages, 4 figures & 2 tables. Matches published version

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Cited by in corpus (9)

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• The ScotoSinglet Model: A Scalar Singlet Extension of the Scotogenic Model
• The Scale Invariant Scotogenic Model: Dark Matter and the Scalar Sector
• A Scotogenic Model with Two Inert Doublets
• Scotoseesaw model implied by dark right-handed neutrinos
• Exploring Scotogenic Parameter Spaces and Mapping Uncharted Dark Matter Phenomenology with Multi-Objective Search Algorithms
• The Scotogenic Model with Two Inert Doublets: Parameters Space and Electroweak Precision Tests
• Phenomenology of the Hidden SU(2) Vector Dark Matter Model
• Theory and phenomenology of Dirac neutrinos