QCD effects on direct detection of wino dark matter
QCD effects on direct detection of wino dark matter
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DOI：
10.1007/jhep06(2015)097
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发表时间：
2015-04
影响因子：
5.4
通讯作者：
J. Hisano;Koji Ishiwata;N. Nagata
中科院分区：
文献类型：
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作者：
J. Hisano;Koji Ishiwata;N. Nagata
我们完成了α s中次领先级的维诺-核子散射截面的计算。我们假设其他的超粒子是解耦的，并且wino通过弱相互作用与标准模型粒子相互作用。结果，来自微扰QCD的不确定性显着降低，小于来自核子矩阵元的不确定性。由此产生的散射截面被发现是大于领先的一级约70%，这是远远高于中微子的背景。在大维诺质量的极限下，质子与自旋无关的散射截面为σ pSI = 2。3+ 0.2− 0.3+ 0.5− 0.4× 10− 47 cm 2（误差分别来自微扰计算和输入参数）。给出了一般SU（2）L多重态暗物质的计算。
We complete the calculation of the wino-nucleon scattering cross section up to the next-to-leading order in α s. We assume that the other sparticles are decoupled and wino interacts with the Standard Model particles via the weak interaction. As a result, the uncertainties coming from the perturbative QCD are significantly reduced to be smaller than those from the nucleon matrix elements. The resultant scattering cross section is found to be larger than the leading-order one by about 70%, which is well above the neutrino background. In the limit of large wino mass the spin-independent scattering cross section with proton turns out σ p SI= 2. 3+ 0.2− 0.3+ 0.5− 0.4× 10− 47 cm 2 (errors come from perturbative calculation and input parameters, respectively). The computation for a generic SU (2) L multiplet dark matter is also presented.