Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-11-25
Physics
High Energy Physics
High Energy Physics - Phenomenology
references added
Scientific paper
Dark matter (comprising a quarter of the Universe) is usually assumed to be due to one and only one weakly interacting particle which is neutral and absolutely stable. We consider the possibility that there are several coexisting dark-matter particles, and explore in some detail the generic case where there are two. We discuss how the second dark-matter particle may relax the severe constraints on the parameter space of the Minimal Supersymmetric Standard Model, as well as other verifiable predictions in both direct and indirect search experiments.
Cao Qing-Hong
Ma Ernest
Wudka Jose
Yuan C.--P.
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