Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-02-19
Phys.Rev.D80:035008,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 2 plots, published version, some clarifications added
Scientific paper
10.1103/PhysRevD.80.035008
We propose a model in which supersymmetric weak scale dark matter is charged under a U(1)_d dark gauge symmetry. Kinetic mixing between U(1)_d and hypercharge generates the appropriate hierarchy of scales needed to explain PAMELA and ATIC with a GeV scale force carrier and DAMA (or INTEGRAL) using the proposals of inelastic (or, respectively, exciting) dark matter. Because of the extreme simplicity of this setup, observational constraints lead to unambiguous determination of the model parameters. In particular, the DAMA scattering cross section is directly related to the size of the hypercharge D-term vacuum expectation value. The known relic abundance of DM can be used to fix the ratio of the dark sector coupling to the dark matter mass. Finally, the recent observation of cosmic ray positron and electron excesses can be used to fix the mass of the dark matter through the observation of a shoulder in the spectrum and the size of the kinetic mixing by fitting to the rate. These parameters can be used to make further predictions, which can be checked at future direct detection, indirect detection, as well as collider experiments.
Cheung Clifford
Ruderman Joshua T.
Wang Lian-Tao
Yavin Itay
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