论文标题
LHC Higgsino发现飞机用于现在和未来的Susy搜索
The LHC higgsino discovery plane for present and future SUSY searches
论文作者
论文摘要
electroweak自然性和弦天性的考虑意味着在超对称模型中有点层次结构，其中超电势higgsino质量参数mu的阶数为弱尺度，而软susy breaking项可能在（多）TEV范围内。在这种情况下，在Higgsino Pair Production渠道中发现Susy很可能是在LHC中发现的。实际上，Atlas和CM正在M（CHI_2^0）与ΔM^0 = m（CHI_2^0）-M（CHI_1^0）的HIGGSINO质量发现平面进行搜索。我们在重力介导NUHM2模型和一般幻影介绍（GMM'）模型中检查了该发现平面的几个理论方面。其中包括：相关的chargino质量M（CHI_1^+），Electroweak Naturalness tobulweak tobles thementnessδ_{ew}的预期区域以及蛇形自然性的预期区域。尽管与Electroweak自然性的兼容性允许质量间隙ΔM^0〜4-20 GEV，但刺激性的自然性表现出对4-10 GEV的较小质量间隙的明显偏爱。对于较小的质量间隙，由于需要很大的仪表质量，因此飞机变得急剧不自然。这项研究为即将到来的HL-LHC运行以及可能的HE-LHC选项提供了最有前途的SUSY搜索渠道和参数空间区域。
Considerations from electroweak naturalness and stringy naturalness imply a little hierarchy in supersymmetric models where the superpotential higgsino mass parameter mu is of order the weak scale whilst the soft SUSY breaking terms may be in the (multi-) TeV range. In such a case, discovery of SUSY at LHC may be most likely in the higgsino pair production channel. Indeed, ATLAS and CMS are performing searches in the higgsino mass discovery plane of m(chi_2^0) vs. Δm^0 = m(chi_2^0)-m(chi_1^0). We examine several theoretical aspects of this discovery plane in both the gravity-mediation NUHM2 model and the general mirage-mediation (GMM') models. These include: the associated chargino mass m(chi_1^+), the expected regions of the bottom-up notion of electroweak naturalness Δ_{EW}, and the expected regions of stringy naturalness. While compatibility with electroweak naturalness allows for mass gaps Δm^0~ 4-20 GeV, stringy naturalness exhibits a clear preference for yet smaller mass gaps of 4-10 GeV. For still smaller mass gaps, the plane becomes sharply unnatural since very large gaugino masses are required. This study informs the most promising SUSY search channels and parameter space regions for the upcoming HL-LHC runs and possible HE-LHC option.
