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

2005/02/28 by Luisa Sabrina Stark, L. S. Stark, Petra Hafliger +4 · 2 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1088/1126-6708/2005/08/059

published as JHEP0508:059,2005 · Typos corrected, Fig.1. updated, references added

openalex publication_date 2005/08/17 · arxiv created 2005/08/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

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.

Citations

• Observation of the Top Quark
• Low-energy supergravity: False vacua and vacuous predictions
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• ISAJET 7.37: A Monte Carlo Event Generator for pp, pp, and e⁺e^- Interactions
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Review of particle properties
• Review of Particle Physics

Cited by

• Fitting the phenomenological MSSM
• A Markov chain Monte Carlo analysis of the CMSSM