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arXiv 0910.3293hep-ph
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具有规范玻色子对产生的单圈遗迹密度

Relic density at one-loop with gauge boson pair production

N. Baro, F. Boudjema, G. Chalons, Sun Hao

摘要:

我们计算了MSSM中对暗物质残余密度有贡献的过程的全部单圈修正(电弱修正和QCD修正),其中LSP是最轻的中性伴子。我们涵盖的情况下,最重要的渠道是那些规范玻色子对生产。这包括一个比诺与一些酒鬼混合物的情况,一个希格西诺和一个酒鬼。在本文中,我们专门的情况下,轻暗物质远低于TeV的规模。这些修正可能对预测产生不可忽视的影响,鉴于目前和今后遗迹密度测量的精度越来越高,应予以考虑。我们的计算是在\SloopS的帮助下进行的,\SloopS是MSSM中单回路过程计算的自动工具。研究了与$\tgb$有关的结果的重整化方案依赖性。

英文摘要:

We have computed the full one-loop corrections (electroweak as well as QCD) to processes contributing to the relic density of dark matter in the MSSM where the LSP is the lightest neutralino. We cover scenarios where the most important channels are those with gauge boson pair production. This includes the case of a bino with some wino admixture, a higgsino and a wino. In this paper we specialise to the case of light dark matter much below the TeV scale. The corrections can have a non-negligible impact on the predictions and should be taken into account in view of the present and forthcoming increasing precision on the relic density measurements. Our calculations are made with the help of \SloopS, an automatic tool for the calculation of one-loop processes in the MSSM. The renormalisation scheme dependence of the results as concerns $\tgb$ is studied.

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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