Sleptonic SUSY: from UV framework to IR phenomenology
Sleptonic SUSY: from UV framework to IR phenomenology
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DOI：
10.1007/jhep09(2022)142
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发表时间：
2022-03
影响因子：
5.4
通讯作者：
K. Agashe;Majid Ekhterachian;Zhen Liu;R. Sundrum
中科院分区：
文献类型：
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作者：
K. Agashe;Majid Ekhterachian;Zhen Liu;R. Sundrum
我们研究了一个有吸引力的方案，“睡眠超对称性”，它调和了125 GeV的希格斯标量和非观测到的超伙伴到目前为止与潜在的关键作用slepton现象：提供可行的正在进行的目标LHC的发现，纳入可检测的热遗迹暗物质的共湮灭合作伙伴，并能够调解潜在的μ子g− 2异常。这是由一个适度的层次谱，与子TeV的slepton和electroweakinos和多TeV的质量为其他新的国家。我们研究了基于高维螯合的睡眠超对称性的UV MSSM实现中的新元素以及由此产生的高吉诺介导、超荷D项介导和Higgs介导的超对称性打破之间的协同作用，从而更充分地捕捉可能性的范围。这个框架通过和谐地解决超对称范式的风味、CP和μ− Bμ问题而脱颖而出。我们讨论了它的扩展orbifold大统一理论，包括规范耦合和b-tau统一。我们还开发了一个非最小的模型与额外的希格斯场，其中的电弱真空更容易宇宙学稳定对衰变的电荷破坏真空，允许更广泛的sleptonic光谱比单独在MSSM。我们调查丰富的信号可能在大型强子对撞机和未来的对撞机，涵盖R-宇称守恒和违反，以及暗物质检测。虽然多TeV方波意味着一个小层次问题，但有趣的是，为提高自然性而对参数空间进行的微小改变会导致戏剧性的相变，要么是电弱保持，要么是电荷断裂。在多元宇宙的背景下，适度的不自然可以用“危险生活原则”来解释。
We study an attractive scenario,“Sleptonic SUSY”, which reconciles the 125 GeV Higgs scalar and the non-observation of superpartners thus far with potentially pivotal roles for slepton phenomenology: providing viable ongoing targets for LHC discovery, incorporating a co-annihilation partner for detectable thermal relic dark matter, and capable of mediating the potential muon g− 2 anomaly. This is accomplished by a modestly hierarchical spectrum, with sub-TeV sleptons and electroweakinos and with multi-TeV masses for the other new states. We study new elements in the UV MSSM realization of Sleptonic SUSY based on higher-dimensional sequestering and the synergy between the resulting gaugino-mediation, hypercharge D-term mediation and Higgs-mediation of SUSY-breaking, so as to more fully capture the range of possibilities. This framework stands out by harmoniously solving the flavor, CP and μ− Bμ problems of the supersymmetric paradigm. We discuss its extension to orbifold GUTs, including gauge-coupling and b-tau unification. We also develop a non-minimal model with extra Higgs fields, in which the electroweak vacuum is more readily cosmologically stable against decay to a charge-breaking vacuum, allowing a broader range of sleptonic spectra than in the MSSM alone. We survey the rich set of signals possible at the LHC and future colliders, covering both R-parity conservation and violation, as well as for dark matter detection. While the multi-TeV squarks imply a Little Hierarchy Problem, intriguingly, small changes in parameter space to improve naturalness result in dramatic phase transitions to either electroweak-preservation or charge-breaking. In a Multiverse setting, the modest unnaturalness may then be explained by the “principle of living dangerously”.