A minimal supersymmetric scenario with only μ at the weak scale
A minimal supersymmetric scenario with only μ at the weak scale
复制标题
弱尺度下只有 μ 的最小超对称场景
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
Jeonghyeon Song
中科院分区：
文献类型：
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作者：
K. Cheung;C. Chiang;Jeonghyeon Song
受分裂超对称的启发，我们研究了一个只有希格西诺质量参数mu低于TeV尺度的最小超对称场景。其动机是在超对称模型的电弱尺度下，以最小粒子含量满足规范耦合统一和暗物质约束。以中性希格西诺粒子为最轻的超对称粒子，讨论了直接探测和间接探测中的暗物质信号。我们还讨论了与两个最轻的中性微子和最轻的带电子相关的对撞机现象学，它们在质量上几乎是简并的，即使考虑了辐射校正。不幸的是，对撞机信号可能很难识别这种情况，因为最终状态的介子或轻子太软了。
Inspired by split supersymmetry, we study a minimal supersymmetric scenario with only the Higgsino mass parameter $mu$ below the TeV scale. The motivation is to satisfy the gauge coupling unification and dark matter constraints with the minimal particle contents at the electroweak scale in supersymmetric models. With the neutral Higgsino as the lightest supersymmetric particle, we discuss the dark matter signals in both direct and indirect detection. We also discuss collider phenomenology associated with the two lightest neutralinos and the lightest chargino, which are almost degenerate in mass even after taking into account radiative corrections. Unfortunately, the collider signals may be very difficult for identifying such a scenario because the pions or leptons in the final state are too soft.