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arXiv 1104.0679hep-phastro-ph.CO
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Super-Kamiokande中暗物质的新极限

New Limits on Dark Matter from Super-Kamiokande

Rolf Kappl, Martin Wolfgang Winkler

摘要:

在直接探测实验DAMA,CoGeNT和CRESST中观察到的信号可以用具有相当大的与核子自旋无关的截面的轻WIMP来解释。这些粒子在太阳中的捕获和随后的湮灭将引起GeV范围内的中微子信号,这可能会在超级神冈观测到。我们确定向上停止μ子和完全包含的事件在超级神冈各种可能的WIMP湮灭通道的速率。这使我们能够提供强有力的约束的截面的WIMP与核子。我们发现,DAMA和CoGeNT信号是不一致的标准热WIMP湮灭占主导地位的中微子或tau对。我们还提供了限制自旋相关的WIMP核散射的质量高达80 GeV。这些排除DAMA青睐的区域,如果WIMP湮灭,甚至占主导地位的中微子,金牛座,底部或魅力。

英文摘要:

The signals observed at the direct detection experiments DAMA, CoGeNT and CRESST could be explained by light WIMPs with sizeable spin-independent cross sections with nucleons. The capture and subsequent annihilation of such particles in the sun would induce neutrino signals in the GeV range which may be observed at Super-Kamiokande. We determine the rate of upward stopping muons and fully contained events at Super-Kamiokande for various possible WIMP annihilation channels. This allows us to provide strong constraints on the cross section of WIMPs with nucleons. We find that the DAMA and CoGeNT signals are inconsistent with standard thermal WIMPs annihilating dominantly into neutrino or tau pairs. We also provide limits for spin-dependent WIMP nucleus scattering for masses up to 80 GeV. These exclude the DAMA favored region if WIMPs annihilate even subdominantly into neutrinos, taus, bottoms or charms.

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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