论文标题
光higgsino场景与MUON G-2面对
Light higgsino scenario confronted with muon g-2
论文作者
论文摘要
低能量超对称性的自然性，低于几百GEV的光Higgsinos受到了数百GEV的影响。如果只有希格西诺（Higgsinos）是光线的，而其他晶格则足够沉重，那么我们就会有所谓的光中心场景。面对MUON $ G-2 $数据，该方案在这项工作中进行了检查。由于在这种情况下，LSP（最轻的）类似于Higgsino，因此我们还需要考虑暗物质的约束。假设在100-400 GEV的范围内具有轻度的Higgsino质量参数$μ$，而TEV上方的gaugino质量参数则在MUON $ G-2 $数据和暗物质约束下探索参数空间。我们发现，为了解释$2σ$的Muon $ G-2 $异常，Winos和Slectons分别由3 TEV和800 GEV界定上限。在这种情况下，我们发现像希格西诺一样的暗物质可以用核子散射相当大，因此，未来的LZ暗物质检测项目几乎可以完全覆盖允许的参数空间。我们还执行了蒙特卡洛模拟，以找出HL-LHC在这种情况下检测浅色Sleptons的潜力。事实证明，与当前的LHC限制相比，HL-LHC可以进一步覆盖参数空间的一部分。
Light higgsinos below several hundred GeV are favored or required by the naturalness of low energy supersymmetry. If only higgsinos are light while other sparticles are sufficiently heavy, we have the so-called light higgsino scenario. Confronted with the muon $g-2$ data, this scenario is examined in this work. Since in this scenario the LSP (lightest sparticle) is higgsino-like, we need to also consider the dark matter constraints. Assuming a light higgsino mass parameter $μ$ in the range of 100-400 GeV while gaugino mass parameters above TeV, we explore the parameter space under the muon $g-2$ data and the dark matter constraints. We find that, to explain the muon $g-2$ anomaly at $2σ$, the winos and sleptons are respectively upper bounded by 3 TeV and 800 GeV. In this case, we find that the light higgsino-like dark matter can sizably scatter with nucleon and thus the allowed parameter space can be covered almost fully by the future LZ dark matter detection project. We also perform a Monte Carlo simulation to figure out the potential of HL-LHC to detect the light sleptons in this scenario. It turns out that compared with the current LHC limits, the HL-LHC can further cover a part of the parameter space.
