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arXiv 1607.06396hep-phastro-ph.CO
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中性伴子暗物质直接探测的SUSY-QCD修正和与遗迹密度的相关

SUSY-QCD corrections for the direct detection of neutralino dark matter and correlations with the relic density

Michael Klasen, Karol Kovarik, Patrick Steppeler

摘要:

在本文中,我们对MSSM中中性伴子与质子或中子的散射进行了完整的次领先阶(NLO)QCD计算。我们用有效场论方法将非线性光学QCD的计算结果与标量和轴矢量算符相匹配。这些分别支配自旋无关和自旋相关的检测率。对中性伴子暗物质的一般bino、wino和higgsino分解进行了计算,需要一种新的相对速度和Gram行列式为零的圈积分张量约化方法。数值上,非线性光学QCD效应被证明是至少类似的大小,有时大于目前估计的核不确定性。我们还证明了直接检测率与文物密度的相互作用时,一贯与程序$\mathtt{DM@NLO}$分析。

英文摘要:

In this paper, we perform a full next-to-leading order (NLO) QCD calculation of neutralino scattering on protons or neutrons in the MSSM. We match the results of the NLO QCD calculation to the scalar and axial-vector operators in the effective field theory approach. These govern the spin-independent and spin-dependent detection rates, respectively. The calculations have been performed for general bino, wino and higgsino decompositions of neutralino dark matter and required a novel tensor reduction method of loop integrals with vanishing relative velocities and Gram determinants. Numerically, the NLO QCD effects are shown to be of at least of similar size and sometimes larger than the currently estimated nuclear uncertainties. We also demonstrate the interplay of the direct detection rate with the relic density when consistently analyzed with the program $\mathtt{DM@NLO}$.

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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