| 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 ΛCDM. 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 |
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