New allowed mSUGRA parameter space from variations of the trilinear scalar coupling A0

Details New allowed mSUGRA parameter space from variations of the trilinear scalar coupling A0 New allowed mSUGRA parameter space from variations of the trilinear scalar coupling A0

2005-02-21

arxiv.org/abs/hep-ph/0502197v2

JHEP0508:059,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

Typos corrected, Fig.1. updated, references added

Scientific paper

10.1088/1126-6708/2005/08/059

In minimal Supergravity (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-m1/2 plane, the so called WMAP strips. In this analysis the trilinear coupling A0 has been varied within +/-4 TeV. A fixed non vanishing A0 value leads to a shift of the WMAP strips in the m0-m1/2 plane.

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