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Type: Journal article
Title: The ScotoSinglet Model: a scalar singlet extension of the Scotogenic Model
Author: Beniwal, A.
Herrero-García, J.
Leerdam, N.
White, M.
Williams, A.G.
Citation: The Journal of High Energy Physics, 2021; 2021(6):136-1[i]-136-32
Publisher: Springer Nature
Issue Date: 2021
ISSN: 1029-8479
Statement of
Ankit Beniwal, Juan Herrero-García, Nicholas Leerdam, Martin White and Anthony G. Williams
Abstract: The Scotogenic Model is one of the most minimal models to account for both neutrino masses and dark matter (DM). In this model, neutrino masses are generated at the one-loop level, and in principle, both the lightest fermion singlet and the lightest neutral component of the scalar doublet can be viable DM candidates. However, the correct DM relic abundance can only be obtained in somewhat small regions of the parameter space, as there are strong constraints stemming from lepton flavour violation, neutrino masses, electroweak precision tests and direct detection. For the case of scalar DM, a sufficiently large lepton-number-violating coupling is required, whereas for fermionic DM, coannihilations are typically necessary. In this work, we study how the new scalar singlet modifies the phenomenology of the Scotogenic Model, particularly in the case of scalar DM. We find that the new singlet modifies both the phenomenology of neutrino masses and scalar DM, and opens up a large portion of the parameter space of the original model.
Keywords: Beyond Standard Model; Higgs physics, neutrino physics
Rights: © The Authors. Article funded by SCOAP³. Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
DOI: 10.1007/jhep06(2021)136
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