Baer Howard, Barger Vernon, Martinez Dakotah, Salam Shadman
Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, OK 73019, USA.
Department of Physics, University of Wisconsin, Madison, WI 53706, USA.
Entropy (Basel). 2024 Mar 21;26(3):275. doi: 10.3390/e26030275.
Superstring flux compactifications can stabilize all moduli while leading to an enormous number of vacua solutions, each leading to different 4-d laws of physics. While the string landscape provides at present the only plausible explanation for the size of the cosmological constant, it may also predict the form of weak scale supersymmetry which is expected to emerge. Rather general arguments suggest a power-law draw to large soft terms, but these are subject to an anthropic selection of a not-too-large value for the weak scale. The combined selection allows one to compute relative probabilities for the emergence of supersymmetric models from the landscape. Models with weak scale naturalness appear most likely to emerge since they have the largest parameter space on the landscape. For finetuned models such as high-scale SUSY or split SUSY, the required weak scale finetuning shrinks their parameter space to tiny volumes, making them much less likely to appear compared to natural models. Probability distributions for sparticle and Higgs masses from natural models show a preference for Higgs mass mh∼125 GeV, with sparticles typically beyond the present LHC limits, in accord with data. From these considerations, we briefly describe how natural SUSY is expected to be revealed at future LHC upgrades. This article is a contribution to the Special Edition of the journal , honoring Paul Frampton on his 80th birthday.
超弦通量紧致化可以稳定所有模，同时导致大量的真空解，每个解都导致不同的四维物理定律。虽然弦景观目前为宇宙学常数的大小提供了唯一合理的解释，但它也可能预测预期会出现的弱标度超对称的形式。相当普遍的论据表明，软项会以幂律形式趋向于大的值，但这些都受到对弱标度不太可能出现的大值进行人择选择的限制。这种综合选择使人们能够计算超对称模型从景观中出现的相对概率。具有弱标度自然性的模型似乎最有可能出现，因为它们在景观中有最大的参数空间。对于像高标度超对称或分裂超对称这样的微调模型，所需的弱标度微调将它们的参数空间缩小到微小的体积，使得它们与自然模型相比出现的可能性要小得多。自然模型的超粒子和希格斯玻色子质量的概率分布显示出对希格斯玻色子质量(m_h\sim125) GeV的偏好，超粒子通常超出目前大型强子对撞机的探测极限，这与数据相符。基于这些考虑，我们简要描述了自然超对称有望在未来大型强子对撞机升级中如何被揭示。本文是对该期刊特刊的一篇投稿，以纪念保罗·弗兰普顿80岁生日。
