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arXiv 0907.0235hep-phastro-ph.HEnucl-th
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Goldstone赝标交换的索末菲增强

Sommerfeld enhancement from Goldstone pseudo-scalar exchange

Paulo F. Bedaque, Michael I. Buchoff, Rashmish K. Mishra

摘要:

我们指出,交换的戈德斯通赝标量可以提供一个增强的暗物质湮灭率能够解释在高能宇宙线数据中看到的过剩通量。增强的机制涉及s波和d波通过张量力的耦合,张量力非常强,事实上,在短距离内是奇异的。结果表明,大的增强需要一定量的微调。我们还讨论了由于其他奇异吸引势,如永久电偶极子的WIMP模型的增强。

英文摘要:

We point out that the exchange of a Goldstone pseudo-scalar can provide an enhancement in the dark matter annihilation rate capable of explaining the excess flux seen in high energy cosmic ray data. The mechanism of enhancement involves the coupling of s and d waves through the tensor force that is very strong and, in fact, singular at short distances. The results indicate that large enhancements require some amount of fine tuning. We also discuss the enhancement due to other singular attractive potentials, such as WIMP models with a permanent electric dipole.

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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