arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1102.0556hep-phhep-th
收藏

M理论中μ的理论与现象学

Theory and Phenomenology of mu in M theory

Bobby Samir Acharya, Gordon Kane, Eric Kuflik, Ran Lu

摘要:

我们考虑在G2流形上M理论中的μ问题的一个解。我们的研究是基于Witten提出的离散对称性,该对称性禁止了μ项,解决了二重态-三重态分裂问题。我们指出,对称性必须打破模量稳定,详细描述这是如何发生的。在隐藏扇区中的强动力学产生稳定所有模量并破坏超对称性的势(m_{3/2} ~ 20 - 30 TeV)之后,通过Kahler相互作用产生μ项。我们表明,相对于引力子质量,μ被更高维度的算子μ ~ 0.1 m_{3/2} ~ 2-3 TeV抑制。这必然会给LSP(主要是维诺)一个希格斯诺分量,以及一个小但不可忽略的LSP-核子散射截面。最大的、与自旋无关的横截面不在当前XENON 100实验的范围内,但在即将进行的运行和升级中是可以达到的。

英文摘要:

We consider a solution to the mu-problem within M theory on a G2-manifold. Our study is based upon the discrete symmetry proposed by Witten that forbids the mu-term and solves the doublet-triplet splitting problem. We point out that the symmetry must be broken by moduli stabilization, describing in detail how this can occur. The mu-term is generated via Kahler interactions after strong dynamics in the hidden sector generate a potential which stabilizes all moduli and breaks supersymmetry with m_{3/2} ~ 20 - 30 TeV. We show that mu is suppressed relative to the gravitino mass, by higher dimensional operators, mu ~ 0.1 m_{3/2} ~ 2-3 TeV. This necessarily gives a Higgsino component to the (mostly Wino) LSP, and a small but non-negligible LSP-nucleon scattering cross-section. The maximum, spin-independent cross-sections are not within reach of the current XENON100 experiment, but are within reach of upcoming runs and upgrades.

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。

↑