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arXiv 0811.1441hep-ph
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用SUSY-QCD修正的中微子湮灭到夸克

Neutralino annihilation to quarks with SUSY-QCD corrections

Karol Kovarik, Björn Herrmann

摘要:

超对称模型中的暗物质候选者的宇宙学遗迹密度的计算是一个有趣的可能性,以获得关于对撞机,电弱精度和低能量数据的超对称参数空间的额外约束。考虑到未来宇宙学的精确测量,辐射校正在分析中可以发挥重要作用。给出了中性伴子湮灭为夸克-反夸克对的全QCD和超对称-QCD修正,并分析了它们对中性伴子湮灭截面和残余密度的影响。通过与由纯首阶计算得到的遗迹密度的比较,我们表明修正强烈地影响从宇宙学数据中提取超对称质量参数。

英文摘要:

The calculation of the cosmological relic density of the dark matter candidate within supersymmetric models is an interesting possibility to obtain additional constraints on the supersymmetric parameter space with respect to collider, electroweak precision, and low-energy data. Considering future cosmological precision measurements, radiative corrections can play an important role in the analysis. We present full QCD and SUSY-QCD corrections to neutralino pair annihilation into quark-antiquark pairs and analyze their impact on the neutralino annihilation cross section and the relic density. By comparing to the relic density obtained from a pure leading order calculation, we show that the corrections strongly influence the extraction of SUSY mass parameters from cosmological data.

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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