New allowed mSUGRA parameter space from variations of the trilinear scalar couplingA0 | Zendy

L. S. Stark | Zendy; Petra Häfliger | Zendy; A. Biland | Zendy; Felicitas Pauss | Zendy

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New allowed mSUGRA parameter space from variations of the trilinear scalar couplingA₀

Author(s) -

L. S. Stark,

Petra Häfliger,

A. Biland,

Felicitas Pauss

Publication year - 2005

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2005/08/059

Subject(s) - cmb cold spot , physics , particle physics , supergravity , scalar (mathematics) , parameter space , dark matter , coupling (piping) , neutralino , lightest supersymmetric particle , cold dark matter , minimal supersymmetric standard model , supersymmetry , quantum mechanics , statistics , cosmic microwave background , mechanical engineering , geometry , mathematics , engineering , anisotropy

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 oftan(beta), these limits result in narrow lines of allowed regions in them0-m1/2 plane, the so called WMAP strips. In this analysis the trilinearcoupling A0 has been varied within +/-4 TeV. A fixed non vanishing A0 valueleads to a shift of the WMAP strips in the m0-m1/2 plane.Comment: Typos corrected, Fig.1. updated, references adde

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