Sub-MeV Self Interacting Dark Matter

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DC Field	Value	Language
dc.contributor.author	Chauhan, Bhavesh	-
dc.date.accessioned	2024-08-20T06:18:03Z	-
dc.date.available	2024-08-20T06:18:03Z	-
dc.date.issued	2018-06	-
dc.identifier.uri	https://journals.aps.org/prd/abstract/10.1103/PhysRevD.97.123017	-
dc.identifier.uri	http://dspace.bits-pilani.ac.in:8080/jspui/xmlui/handle/123456789/15287	-
dc.description.abstract	In this paper, we present a model for sub-MeV dark matter with strong self-interactions which can solve some of the small-scale crisis of the Λ⁢CDM. The dark matter is a Majorana fermion with only off-diagonal interactions with a hidden 𝑈⁢(1)𝐷 gauge boson. The relic density is obtained by freeze-out of Boltzmann suppressed annihilations to a light fermionic species. The self-interaction is a one-loop process and constrained to be between 0.1 to 1 cm2/g. Severe constraints from the BBN on 𝑁eff require that the dark and visible sector are not in thermal equilibrium during freeze-out. The effect of this temperature asymmetry is studied.	en_US
dc.language.iso	en	en_US
dc.publisher	APS	en_US
dc.subject	Physics	en_US
dc.subject	Cosmology: Theory	en_US
dc.subject	Gravitation	en_US
dc.subject	Astrophysics - Cosmology	en_US
dc.title	Sub-MeV Self Interacting Dark Matter	en_US
dc.type	Article	en_US
Appears in Collections:	Department of Physics

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