Gravitino dark matter in the CMSSM
By John Ellis, K. Olive, Y. Santoso, V. Spanos. 2003
183 citations recorded by the source corpus.
We consider the possibility that the gravitino might be the lightest supersymmetric particle (LSP) in the constrained minimal extension of the Standard Model (CMSSM). In this case, the next-to-lightest supersymmetric particle (NSP) would be unstable, with an abundance constrained by the concordance between the observed light-element abundances and those calculated on the basis of the baryon-to-entropy ratio determined using CMB data. We modify and extend previous CMSSM relic neutralino calculations to evaluate the NSP density, also in the case that the NSP is the lighter stau, and show that the constraint from late NSP decays is respected only in a limited region of the CMSSM parameter space. In this region, gravitinos might constitute the dark matter.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/a1ac94a8f4b4e42358703925d7e0b9bea0d4848d
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Citations in the corpus
- Dark Matter Candidates from Particle Physics and Methods of Detection (2010, background): “The prototypical superWIMP is the gravitino G̃ (125; 126; 133; 134; 135; 136).”
- Updated Constraints on the Minimal Supergravity Model (2002, background): “The lightest neutralino χ̃1 must be essentially stable, which, in the context of mSUGRA with conserved R−parity, requires it to be heavier than the gravitino [28].”