Massive sterile neutrinos as warm Dark Matter
High Energy Physics - Phenomenology
2008-11-26 v3 Astrophysics
Abstract
We show that massive sterile neutrinos mixed with the ordinary ones may be produced in the early universe in the right amount to be natural warm dark matter particles. Their mass should be below 40 keV and the corresponding mixing angles sin^2 2\theta > 10^{-11} for mixing with \nu_\mu or \nu_\tau, while mixing with \nu_e is slightly stronger bounded with mass less than 30 keV.
Cite
@article{arxiv.hep-ph/0009083,
title = {Massive sterile neutrinos as warm Dark Matter},
author = {A. D. Dolgov and S. H. Hansen},
journal= {arXiv preprint arXiv:hep-ph/0009083},
year = {2008}
}
Comments
13 pages, 1 figure, references and acknowledgement added; discussion on SN bound updated, matches version in Astropart.phys