| dc.contributor.author |
Chauhan, Bhavesh |
|
| dc.date.accessioned |
2017-12-06T05:29:07Z |
|
| dc.date.available |
2017-12-06T05:29:07Z |
|
| dc.date.issued |
2017-11 |
|
| dc.identifier.citation |
Chauhan, Bhavesh, "Sub-MeV self interacting dark matter", arXiv, Cornell University Library, DOI: arXiv:1711.02970, Nov. 2017. |
en_US |
| dc.identifier.uri |
http://arxiv.org/abs/1711.02970 |
|
| dc.identifier.uri |
https://repository.iitgn.ac.in/handle/123456789/3330 |
|
| 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 ?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. |
|
| dc.description.statementofresponsibility |
by Bhavesh Chauhan |
|
| dc.language.iso |
en |
en_US |
| dc.publisher |
Cornell University Library |
en_US |
| dc.title |
Sub-MeV self interacting dark matter |
en_US |
| dc.type |
Preprint |
en_US |