Impact of A0 on the mSUGRA parameter space
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
In mSUGRA models the lightest supersymmetric particle (assumed to be the lightest neutralino) provides an excellent cold dark matter (CDM) candidate. The supersymmetric parameter space is significantly reduced, if the limits on the CDM relic density, obtained from WMAP data, are used. Assuming a vanishing trilinear scalar coupling A0 and fixed values of tan(beta), these limits result in narrow lines of allowed regions in the m0-m12 plane, the so called WMAP strips. In this analysis the trilinear coupling A0 has been varied within +/-4TeV resulting in largely extended areas in the m0-m12 plane which are no longer excluded.
Keywords
Cite
@article{arxiv.hep-ph/0505098,
title = {Impact of A0 on the mSUGRA parameter space},
author = {Luisa Sabrina Stark and Petra Hafliger and Adrian Biland and Felicitas Pauss},
journal= {arXiv preprint arXiv:hep-ph/0505098},
year = {2007}
}
Comments
2 pages, contribution to the proceedings of the XXXXth Rencontres de Moriond, La Thuile, March 2005