SUSY-QCD corrections for direct detection of neutralino dark matter and correlations with relic density
SUSY-QCD corrections for direct detection of neutralino dark matter and correlations with relic density
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DOI：
10.1103/physrevd.94.095002
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发表时间：
2016-07
影响因子：
5
通讯作者：
M. Klasen;K. Kovářík;P. Steppeler
中科院分区：
文献类型：
--
作者：
M. Klasen;K. Kovářík;P. Steppeler
在本文中，我们进行了一个完整的次领先阶（NLO）QCD计算的中性伴子散射的质子或中子在MSSM。我们将非线性光学QCD的计算结果与有效场论方法中的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。计算是针对中性伴子暗物质的一般bino、wino和higgsino分解进行的，需要一种新颖的相对速度和Gram行列式为零的回路积分张量约化方法。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，始终与程序$\mathtt{DM@NLO}$分析。
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 $\mathtt{DM@NLO}$.