Markov Chain Monte Carlo Exploration of Minimal Supergravity with Implications for Dark Matter | Zendy

Edward A. Baltz | Zendy; Paolo Gondolo | Zendy

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Markov Chain Monte Carlo Exploration of Minimal Supergravity with Implications for Dark Matter

Author(s) -

Edward A. Baltz,

Paolo Gondolo

Publication year - 2004

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 - 10.1088/1126-6708/2004/10/052

Subject(s) - cmb cold spot , physics , dark matter , particle physics , supergravity , markov chain monte carlo , higgs boson , scalar (mathematics) , minimal supersymmetric standard model , parameter space , superpartner , yukawa potential , gaugino , monte carlo method , supersymmetry , cosmic microwave background , statistics , quantum mechanics , geometry , mathematics , anisotropy

We explore the full parameter space of Minimal Supergravity (mSUGRA),allowing all four continuous parameters (the scalar mass m_0, the gaugino massm_1/2, the trilinear coupling A_0, and the ratio of Higgs vacuum expectationvalues tan beta) to vary freely. We apply current accelerator constraints onsparticle and Higgs masses, and on the b -> s gamma branching ratio, anddiscuss the impact of the constraints on g_mu-2. To study dark matter, we applythe WMAP constraint on the cold dark matter density. We develop Markov ChainMonte Carlo (MCMC) techniques to explore the parameter regions consistent withWMAP, finding them to be considerably superior to previously used methods forexploring supersymmetric parameter spaces. Finally, we study the reach ofcurrent and future direct detection experiments in light of the WMAPconstraint.Comment: 16 pages, 4 figure

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