Self-interacting dark matter via right handed neutrino portal

Borah, Debasish and Dutta, Manoranjan and Mahapatra, Satyabrata and Sahu, Narendra (2022) Self-interacting dark matter via right handed neutrino portal. Physical Review D, 105 (1). pp. 1-24. ISSN 2470-0010

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Abstract

We propose a self-interacting dark matter (DM) scenario with a right handed neutrino (RHN) portal to the standard model (SM). The dark sector consists of a particle DM, assumed to be a Dirac fermion, and a light mediator in terms of a dark Abelian vector boson to give rise the required velocity-dependent self-interactions in agreement with astrophysical observations. Irrespective of thermal or nonthermal production of such a DM, its final relic remains underabundant due to efficient annihilation rates of DM into light mediators by virtue of large self-interaction coupling. We then show that a feeble portal of DM-SM interaction via a RHN offers a possibility to fill the relic deficit of DM via the late decay of a RHN. As RHNs also arise naturally in seesaw models explaining the origin of light neutrino masses, we outline two UV-complete realizations of the minimal setup in terms of scotogenic and gauged B-L frameworks where connection to neutrino mass and other phenomenology like complementary discovery prospects are discussed. © 2022 authors. Published by the American Physical Society.

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IITH Creators:

IITH Creators	ORCiD
Sahu, Narendra	UNSPECIFIED

Item Type:

Article

Additional Information:

D. B. acknowledges the support from Early Career Research Award from Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India (Grant No. ECR/2017/001873). M. D. acknowledges DST, Government of India for providing the financial assistance for the research under the Grant No. DST/INSPIRE/03/2017/000032.

Uncontrolled Keywords:

self-interacting dark matter (DM) scenario, right handed neutrino (RHN) portal.

Subjects:

Physics

Divisions:

Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

26 Jul 2022 06:46

Last Modified:

26 Jul 2022 06:49