arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1111.1095hep-ph
收藏

S_4 × Z_2味对称额外U(1)模型中的质子稳定性

Proton Stability in S_4 x Z_2 Flavor Symmetric Extra U(1) Model

Yasuhiro Daikoku, Hiroshi Okada

摘要:

本文基于E_6激发的具有S_4 × Z_2味对称的额外U(1)模型研究质子稳定性。在这个模型中,质子的长寿命是通过味对称性从几个方面来实现的。我们对质子衰变的抑制机制进行了分类,并解释了味道对称性是如何工作的。有一个有趣的解决方案,例如,在真空期望值(VEV)的一个特殊方向上,重子数破坏相互作用被取消。在适当大小的VEV抑制质子衰变的情况下,当奇异夸克质量为O(TeV)时,VEV的允许区域存在。从奇异夸克的寿命约束出发,右手中微子的质量应该在10^{12} GeV左右的窄范围内。

英文摘要:

We consider proton stability based on E_6 inspired extra U(1) model with S_4 x Z_2 flavor symmetry. In this model, a long life time of proton is realized by the flavor symmetry in several ways. We classify the suppression mechanisms of proton-decay and explain how the flavor symmetry works. There is an interesting solution, such as, in a special direction of vacuum expectation value (VEV), baryon number violating interactions are canceled. In the case that the suppression of proton decay is realized by the appropriate size of VEV, the allowed region of VEV exists when the exotic quark mass is O(TeV). From the constraint for the life time of exotic quark, the right handed neutrino mass should be in narrow range around 10^{12} GeV.

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。

↑