arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1409.5233hep-ph
收藏

超对称SO(10)模型中质子衰变的抑制

Proton decay suppression in a supersymmetric SO(10) model

Xiaojia Li, Da-Xin Zhang

摘要:

我们提出了一个在超对称SO(10)模型中对质子衰变的五维算符进行充分抑制的机制。这个机制类似于研究中微子质量的双跷跷板机制。只需要一个中间VEV而不是一个中间尺度,以便保持规范耦合统一。VEV是通过引入一个反常的U(1)对称性产生的,它的破缺是在更高的尺度上。质子衰变振幅被抑制的VEV在大统一体规模。我们使用$\textbf{45+54}$破缺GUT对称性。包括$\textbf{120}$,使费米子扇区是完全现实的。假设一个最小的微调在希格斯偶极子部门,$\textrm{tan}β$的顺序一的预测。

英文摘要:

We propose a mechanism for sufficient suppression of dimension-5 operators for proton decay in a supersymmetric SO(10) model. This mechanism is analogue to the double seesaw mechanism in studying neutrino masses. Only an intermediate VEV instead of an intermediate scale is required so that gauge coupling unification is maintained. The VEV is generated by introducing an anomalous U(1) symmetry whose breaking is at higher scale. The proton decay amplitudes are suppressed by this VEV over the GUT scale. We use $\textbf{45+54}$ in breaking GUT symmetry. $\textbf{120}$ is included so that fermion sector is fully realistic. Assuming a minimal fine-tuning in the Higgs doublet sector, $\textrm{tan}β$ of order one is predicted.

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。

↑