Abstract
Most analyses of dark matter within supersymmetry assume the entire cold dark matter arising only from weakly interacting neutralinos. We study a new class of models consisting of U(1)ⁿ hidden sector extensions of the minimal supersymmetric standard model that includes several stable particles, both fermionic and bosonic, which can be interpreted as constituents of dark matter. In one such class of models, dark matter is made up of both a Majorana dark matter particle, i.e., a neutralino, and a Dirac fermion with the current relic density of dark matter as given by WMAP being composed of the relic density of the two species. These models can explain the PAMELA positron data and are consistent with the antiproton flux data, as well as the photon data from FERMI-LAT. Further, it is shown that such models can also simultaneously produce spin-independent cross sections which can be probed in CDMS-II, XENON-100, and other ongoing dark matter experiments. The implications of the models at the LHC and at the next linear collider (NLC) are also briefly discussed.
Keywords
PAMELA, neutralinos, hidden sector extensions
Subject Categories
Dark matter (Astronomy), Supersymmetry
Disciplines
Physics
Publisher
American Physical Society
Publication Date
5-27-2010
Rights Information
Copyright (2010) American Physical Society
Rights Holder
American Physical Society
Recommended Citation
Feldman, Daniel; Liu, Zuowei; Nath, Pran; and Peim, Gregory, "Multicomponent dark matter in supersymmetric hidden sector extensions" (2010). Physics Faculty Publications. Paper 471.
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Notes
Originally published in Physical Review D v.81 (2010): 095017. DOI: 10.1103/PhysRevD.81.095017