arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0906.0595hep-thhep-ph
收藏

改造和mu问题

Retrofitting and the mu Problem

Daniel Green, Timo Weigand

摘要:

超对称性破缺和调解的挑战之一是产生符合电弱对称性破缺要求的μ项。最常见的解决方法是通过超对称破缺F项来生成μ项。通常这些模型产生不可接受的大B μ条款的结果。我们将提出一种替代方法,其中μ项直接由非微扰效应产生。同样的非微扰效应也将改造超对称性破缺的模型,使μ与标准模型超伴子的质量处于相同的尺度。因为μ项不是由超对称破缺效应直接产生的,所以不存在相关的B μ问题。这些结果在一个玩具模型中得到了证明,其中一个弦瞬子产生μ。

英文摘要:

One of the challenges of supersymmetry (SUSY) breaking and mediation is generating a mu term consistent with the requirements of electro-weak symmetry breaking. The most common approach to the problem is to generate the mu term through a SUSY breaking F-term. Often these models produce unacceptably large B mu terms as a result. We will present an alternate approach, where the mu term is generated directly by non-perturtative effects. The same non-perturbative effect will also retrofit the model of SUSY breaking in such a way that mu is at the same scale as masses of the Standard Model superpartners. Because the mu term is not directly generated by SUSY breaking effects, there is no associated B mu problem. These results are demonstrated in a toy model where a stringy instanton generates mu.

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。

↑