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Neutralino Cold Dark Matter in a One Parameter Extension of the Minimal Supergravity Model

Howard Baer·Azar Mustafayev·Stefano Profumo·Alexander Belyaev·Xerxes Tata
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Abstract

Within the minimal supergravity model (mSUGRA) framework, the expectation for the relic density of neutralinos exceeds the WMAP determination unless neutralinos a) have a significant higgsino component, b) have a mass close to half that of a heavy Higgs boson, or c)can efficiently co-annihilate with a charged or colored particle. Within a 1-parameter extension of the mSUGRA model which includes non-universal Higgs masses, we show that agreement with the WMAP data can be obtained over a wide range of mSUGRA parameters for scenarios a) and b), so that the phenomenological implications may be much more diverse than in mSUGRA. We show that direct and/or indirect detection of neutralino dark matter should be possible at various current and planned facilities.

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Howard Baer, Azar Mustafayev, Stefano Profumo, Alexander Belyaev, Xerxes Tata. 2005-04-07. Neutralino Cold Dark Matter in a One Parameter Extension of the Minimal Supergravity Model. https://doi.org/10.1103/physrevd.71.095008

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