Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-05-07
Phys.Rev.D79:045020,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 5 figures
Scientific paper
10.1103/PhysRevD.79.045020
Dark matter is examined within the ``golden region'' of the Minimal Supersymmetric Standard Model. This region satisfies experimental constraints, including a lower bound on the Higgs mass of 114 GeV, and minimizes fine-tuning of the Z boson mass. Here we impose additional constraints (particularly due to experimental bounds on $b\to s \gamma$). Then we find the properties of the Dark Matter in this region. Neutralinos with a relic density that provides the amount of dark matter required by cosmological data are shown to consist of a predominant gaugino (rather than higgsino) fraction. In addition, the U(1)$_Y$ gaugino mass parameter must satisfy $M_1 < 300$ GeV.
Freese Katherine
Gondolo Paolo
Kasahara Junya
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