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arXiv 1111.2916hep-phastro-ph.CO
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Wino暗物质湮灭的单圈和Sommerfeld电弱修正

The one-loop and Sommerfeld electroweak corrections to the Wino dark matter annihilation

Andrzej Hryczuk, Roberto Iengo

摘要:

我们计算了现今的Wino暗物质湮灭截面,包括单圈辐射修正和完全处理的电弱索末菲效应。我们讨论了什么是一致的方式,同时将这两个校正,为什么简单地使用运行耦合常数值在威诺质量尺度是不正确的。结果表明,在几个TeV尺度下,完整的单圈计算使截面相对于Sommerfeld增强的树级结果减小了约30%,并且比没有Sommerfeld效应的树或单圈级大得多。

英文摘要:

We compute the present-day Wino dark matter annihilation cross-section including the one-loop radiative corrections together with the fully treated electroweak Sommerfeld effect. We discuss what is the consistent way of incorporating these two corrections simultaneously and why simply using the running coupling constants values at the Wino mass scale is not correct. The results show that up to a few TeV scale the full one-loop computation makes the cross-section smaller up to about 30% with respect to the Sommerfeld enhanced tree level result and are considerably larger than the tree or one-loop level without the Sommerfeld effect.

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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