Study of dark matter physics in non-universal gaugino mass scenario
Study of dark matter physics in non-universal gaugino mass scenario
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DOI：
10.1007/jhep08(2017)072
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发表时间：
2017-03
影响因子：
5.4
通讯作者：
Junichiro Kawamura;Y. Omura
中科院分区：
文献类型：
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作者：
Junichiro Kawamura;Y. Omura
我们在最小超对称标准模型中研究暗物质物理，在统一尺度下具有非普适的高吉诺质量。在这种情况下，维诺和胶子质量的特定比例自然地实现了电弱标度，并达到125 GeV的希格斯玻色子质量。然后，相对轻的希格西诺被预测和最轻的中性粒子，这是主要由希格西诺的中性分量，是一个很好的暗物质候选人。暗物质的直接探测不仅对希格西诺质量敏感，而且对高吉诺质量也很敏感。即将到来的XENON1T实验排除了参数区域，其中比诺或胶子是轻于约2.5 TeV，如果希格西诺和高更诺质量参数具有相同的符号。我们看到，当希格西诺对暗物质丰度有相当大的贡献时，直接探测暗物质比在LHC实验中直接搜索暗物质给出了更强的束缚。
We study dark matter physics in the Minimal Supersymmetric Standard Model with non-universal gaugino masses at the unification scale. In this scenario, the specific ratio of wino and gluino masses realizes the electro-weak scale naturally and achieves 125 GeV Higgs boson mass. Then, relatively light higgsino is predicted and the lightest neutral particle, that is dominantly given by the neutral component of higgsino, is a good dark matter candidate. The direct detection of the dark matter is sensitive to not only a higgsino mass but also gaugino masses significantly. The upcoming XENON1T experiment excludes the parameter region where bino or gluino is lighter than about 2.5 TeV if the higgsino and the gaugino mass parameters have same signs. We see that the direct detection of dark matter gives stronger bound than the direct search at the LHC experiment when higgsino gives sizable contribution to the dark matter abundance.