eV scale sterile neutrino and dark matter phenomenology in A4×U(1)B−L Model

Mishra, Subhasmita and Behera, Mitesh and Mohanta, Rukmani and et al, . (2020) eV scale sterile neutrino and dark matter phenomenology in A4×U(1)B−L Model. In: International Workshop on Frontiers in High Energy Physics, FHEP 2019, 14 October 2019through 17 October 2019, Hyderabad.

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Abstract

We discuss an A4 flavor extended B-L model to realize an eV scale sterile neutrino, which is evident from both particle physics and cosmology experiments. The current framework includes a gauged B-L extension of standard model, where three exotic fermions with B-L charges -4,4, and 5 are introduced to cancel gauge anomalies. Absence of usual Dirac Yukawa couplings between the SM neutrinos and the exotic fermions allows natural realization of eV scale sterile-like neutrino and its mixing by invoking the A4 flavor symmetry. We demonstrate the neutrino phenomenology by perturbing the TBM mixing to obtain a large (formula presented). We also explored the extra contribution to the effective neutrino mass in neutrinoless double beta decay in the presence of eV scale sterile neutrino. On the other hand the interesting feature of the model is that two of three exotic fermions are stable dark matter candidates. We constrain the gauge parameters associated with U(1) gauge extension, using relic density and collider bounds. © Springer Nature Singapore Pte Ltd 2020.

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IITH Creators:
IITH CreatorsORCiD
Item Type: Conference or Workshop Item (Paper)
Additional Information: Subhasmita Mishra and Mitesh Behera acknowledge DST Inspire for its financial support.
Uncontrolled Keywords: Flavor symmetry; Gauge anomaly; Neutrino mass; Neutrinoless double-beta decays; Standard model; Sterile neutrinos; Yukawa couplings
Subjects: Physics
Divisions: Department of Physics
Depositing User: . LibTrainee 2021
Date Deposited: 03 Nov 2022 12:50
Last Modified: 03 Nov 2022 12:50
URI: http://raiith.iith.ac.in/id/eprint/11143
Publisher URL: http://doi.org/10.1007/978-981-15-6292-1_35
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