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arXiv 2202.07046hep-ph
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从弦景观中涌现的辐射自然超对称性

Radiative natural supersymmetry emergent from the string landscape

Howard Baer, Vernon Barger, Dakotah Martinez, Shadman Salam

摘要:

在具有通量紧致化的弦论中,从真空能量值的离散中选择结构形成的人择,提供了目前我们对宇宙学常数的微小而正值的唯一理解。我们将类似的推理应用于一个玩具模型的多元宇宙限制真空与MSSM的低能量有效的理论。在这里,人们期望一个统计选择,有利于大的软超对称性破缺项,从而导致每个口袋宇宙(具有适当的电弱对称性破缺)的弱尺度的衍生值,这不同于在我们的宇宙中测量的弱尺度。相比之下,保持超对称性的μ参数在对数尺度上被均匀地选择,这与SM费米子质量的分布一致:这有利于μ的较小值。为了产生我们所知道的复杂原子核(原子原理),弱尺度的人择选择在我们测量值的几个因子之内,提供了与LHC测量一致的希格斯粒子和s粒子质量的统计预测。然后,统计选择更经常地导致(辐射驱动的){ \it natural}超对称模型超过标准模型或微调超对称模型,如mSUGRA/CMSSM、分裂、小分裂、扩散、高尺度或PeV超对称模型。预测的Higgs和超粒子谱可能是可测试的HL-LHC通过higgsino对的生产,但肯定是可测试的更高的能量强子对撞机与\sqrt{s} ~ 30-100 TeV。

英文摘要:

In string theory with flux compactifications, anthropic selection for structure formation from a discretuum of vacuum energy values provides at present our only understanding of the tiny yet positive value of the cosmological constant. We apply similar reasoning to a toy model of the multiverse restricted to vacua with the MSSM as the low energy effective theory. Here, one expects a statistical selection favoring large soft SUSY breaking terms leading to a derived value of the weak scale in each pocket universe (with appropriate electroweak symmetry breaking) which differs from the weak scale as measured in our universe. In contrast, the SUSY preserving μparameter is selected uniformly on a log scale as is consistent with the distribution of SM fermion masses: this favors smaller values of μ. An anthropic selection of the weak scale to within a factor of a few of our measured value -- in order to produce complex nuclei as we know them (atomic principle) -- provides statistical predictions for Higgs and sparticle masses in accord with LHC measurements. The statistical selection then more often leads to (radiatively-driven) {\it natural} SUSY models over the Standard Model or finely-tuned SUSY models such as mSUGRA/CMSSM, split, mini-split, spread, high scale or PeV SUSY. The predicted Higgs and superparticle spectra might be testable at HL-LHC via higgsino pair production but is certainly testable at higher energy hadron colliders with \sqrt{s}~ 30-100 TeV.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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