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arXiv 0905.0785hep-ph
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标量暗物质与DAMA

Scalar Dark Matter and DAMA

Sarah Andreas

摘要:

根据DAMA合作组的最新结果,研究了轻标量WIMP。在WIMP的湮灭和弹性散射都主要通过Higgs交换发生的情况下,建立了WIMP的残余密度与其自旋无关的直接探测率之间的一对一关系.如果考虑DAMA结果所允许的范围(m < 10 GeV),则相关截面的比值仅取决于暗物质质量。我们表明,如果这样一个轻标量WIMP具有直接的检测率兼容DAMA,它自然会获得与WMAP协议的遗迹丰度。从银河系中心的伽马射线和从太阳的中微子的间接探测为测试这种轻暗物质的情况提供了可能性。

英文摘要:

A light scalar WIMP is studied in view of the recent results of the DAMA collaboration. In a scenario where both the WIMP's annihilation and its elastic scattering on nuclei occur dominantly through Higgs exchange, a one-to-one relation between the WIMP's relic density and its spin-independent direct detection rate is established. The ratio of the relevant cross sections depends only on the dark matter mass if the range allowed by the DAMA results (m < 10 GeV) is considered. We show that if such a light scalar WIMP possesses a direct detection rate compatible with DAMA, it naturally obtains a relic abundance in agreement with WMAP. Indirect detection both with gammas from the Galactic centre and neutrinos from the Sun opens possibilities to test this light dark matter scenario.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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