Cold Dark Matter Hypotheses in the MSSM
arXiv:1009.4308 · doi:10.1016/j.physletb.2011.02.065
Abstract
We perform a Bayesian model selection analysis in the the R-parity conserving MSSM to compare two different assumptions: whether the lightest neutralinos make all or only part of the cold dark matter. This corresponds to either imposing full WMAP relic density limits or just its upper bound for constraining the MSSM parameters. We consider several realisations of the MSSM, namely, three GUT-scale SUSY breaking scenarios with a handful of parameters corresponding to the CMSSM, anomaly mediation and the large volume string scenarios as well as the weak-scale 25-parameter phenomenological MSSM (pMSSM). The results give a data-based quantitative evidence for a multicomponent cold dark matter. The pMSSM posterior samples indicate that the choice of imposing full WMAP limits or just its upper bound affects mostly the gaugino-higgsino content of the neutralino and, against naive expectations, essentially not any other sector.
version to appear in Physcis Letters B
References in corpus (14)
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- micrOMEGAs2.0: a program to calculate the relic density of dark matter in a generic model
- Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
- SuperIso: A program for calculating the isospin asymmetry of B -> K* gamma in the MSSM
- NNLO QCD corrections to the B -> X_s gamma matrix elements using interpolation in m_c
- Hints of large tan(beta) in flavour physics
- Multi-Component Dark Matter
- Astrophysical and Cosmological Implications of Large Volume String Compactifications
- The hadronic contribution to (g-2) of the muon
- Analysis of Br(B-->X_s gamma) at NNLO with a Cut on Photon Energy
- Full one-loop corrections to the relic density in the MSSM: A few examples
- Bayesian Selection of sign(mu) within mSUGRA in Global Fits Including WMAP5 Results
- Flavour physics at large tan(beta) with a Bino-like LSP
- Predictions for Supersymmetric Particle Masses in the CMSSM using Indirect Experimental and Cosmological Constraints