Light Relic Neutralinos
High Energy Physics - Phenomenology
2008-11-26 v2 Astrophysics
High Energy Physics - Experiment
Abstract
The relic abundance and the scalar cross-section off nucleon for light neutralinos (of mass below about 45 GeV) are evaluated in an effective MSSM model without GUT-inspired relations among gaugino masses. It is shown that these neutralinos may provide a sizeable contribution to the matter density in the Universe and produce measurable effects in WIMP direct detection experiments. These properties are elucidated in terms of simple analytical arguments.
Cite
@article{arxiv.hep-ph/0212379,
title = {Light Relic Neutralinos},
author = {A. Bottino and N. Fornengo and S. Scopel},
journal= {arXiv preprint arXiv:hep-ph/0212379},
year = {2008}
}
Comments
11 pages, 4 figures, typeset with ReVTeX4. The paper may also be found at http://www.to.infn.it/~fornengo/papers/light.ps.gz Some comments and references added