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arXiv 1007.2601hep-ph
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胶子对暗物质直接探测的贡献

Gluon contribution to the dark matter direct detection

Junji Hisano, Koji Ishiwata, Natsumi Nagata

摘要:

本文计算了与暗物质直接探测有关的核子-暗物质散射过程的自旋无关截面。特别注意胶子与暗物质的散射,这有助于在微扰的主导秩序,我们系统地评估了跟踪的特征环动量在回路图中占主导地位。这里分别给出了以夸克质量和其它重粒子质量为代表的圈动量标度的圈图。然后,我们适当地考虑了每个贡献,给出了截面。在超对称模型中,我们假设暗物质是纯的二进制或wino。应用到其他模型是简单的。

英文摘要:

In this article we have calculated the spin-independent cross section of nucleon-dark matter scattering process at loop level, which is relevant to dark matter direct detection. Paying particular attention to the scattering of gluon with dark matter, which contributes as leading order in the perturbation, we have systematically evaluated loop diagrams with tracking the characteristic loop momentum which dominates in the loops. Here loop diagrams whose typical loop momentum scales are the masses of quarks and other heavier particles are separately presented. Then, we have properly taken into account each contribution to give the cross section. We assume that the dark matter is pure bino or wino in the supersymmetric models. The application to other models is straightforward.

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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