arXiv 1004.06492010-04hep-phastro-ph.HE

超对称隐扇区扩展中的多组分暗物质

Multicomponent Dark Matter in Supersymmetric Hidden Sector Extensions

Daniel Feldman, Zuowei Liu, Pran Nath, Gregory Peim

备注：: Journal: Physical Review D, Latex 32 pages, 4 eps figures
发表信息：: Phys.Rev.D81:095017,2010
DOI：: 10.1103/PhysRevD.81.095017

摘要：

大多数对超对称性中的暗物质的分析都假设整个冷的暗物质只产生于弱相互作用的中性伴子。我们研究了一类新的模型组成的$U(1)^n$隐藏部门扩展的MSSM，包括几个稳定的粒子，费米子和玻色子，这可以被解释为成分的暗物质。在一类这样的模型中，暗物质由马约拉纳暗物质粒子，即，一个中性伴子和一个狄拉克费米子，WMAP给出的暗物质的剩余密度由这两种物质的剩余密度组成。这些模型可以解释PAMELA正电子数据，并与反质子通量数据以及FERMI-LAT的光子数据相一致。此外，它表明，这样的模型也可以同时产生自旋无关的截面，可以在CDMS-II，XENON-100和其他正在进行的暗物质实验探测。在LHC和NLC的模型的影响也进行了简要的讨论。

英文摘要：

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 MSSM 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 anti-proton 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 NLC are also briefly discussed.

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