Majorana Dark Matter and Neutrino Mass in a Singlet-Doublet Extension of the Standard Model

Dutta, Manoranjan and Bhattacharya, Subhaditya and Ghosh, Purusottam and Sahu, Narendra (2022) Majorana Dark Matter and Neutrino Mass in a Singlet-Doublet Extension of the Standard Model. In: 24th DAE-BRNS High Energy Physics Symposium, 2020, 14 December 2020 through 18 December 2020, Jatni.

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Abstract

A minimal extension of the Standard Model (SM) by a vector-like fermion doublet and three right-handed (RH) singlet neutrinos is proposed in order to explain dark matter and tiny neutrino mass simultaneously.The DM arises as a mixture of the neutral component of the fermion doublet and one of the RH neutrinos, both assumed to be odd under an imposed Z2 symmetry.Being Majorana in nature, the DM escapes from Z-mediated direct search constraints to mark a significant difference from singlet-doublet Dirac DM.The other two Z2 even heavy RH neutrinos give rise masses and mixing of light neutrinos via Type-I Seesaw mechanism.Relic density and direct search allowed parameter space for the model is investigated through detailed numerical scan. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

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IITH Creators:	IITH Creators ORCiD Sahu, Narendra UNSPECIFIED
Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	Dark matter; Gauged B- L symmetry; Neutrino mass
Subjects:	Physics
Divisions:	Department of Physics
Depositing User:	. LibTrainee 2021
Date Deposited:	04 Nov 2022 11:51
Last Modified:	04 Nov 2022 11:51
URI:	http://raiithold.iith.ac.in/id/eprint/11161
Publisher URL:	http://doi.org/10.1007/978-981-19-2354-8_124
Related URLs:	Author Google Scholar

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