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arXiv 2204.01741hep-phhep-th
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关于标准模型中质子稳定性的注记

A Note on Proton Stability in the Standard Model

Seth Koren

摘要:

在这个简短的说明中,我们描述对称性负责绝对的,非微扰质子稳定性的标准模型。具有$N_c$色和${N_g}$代的SM具有精确的、无反常的、与代无关的、整体对称群$U(1)_{B-N_c L} \times \mathbb{Z}_{N_g}^L$,它包含一个$2 N_c {N_g}$阶重子加轻子数的子群。这不允许${N_g}>1$的质子衰变。许多研究得很好的超越SM的模型明确地打破了这种全局对称性,另一种选择值得进一步关注。

英文摘要:

In this short note we describe the symmetry responsible for absolute, nonperturbative proton stability in the Standard Model. The SM with $N_c$ colors and ${N_g}$ generations has an exact, anomaly-free, generation-independent, global symmetry group $U(1)_{B-N_c L} \times \mathbb{Z}_{N_g}^L$, which contains a subgroup of baryon plus lepton number of order $2 N_c {N_g}$. This disallows proton decay for ${N_g}>1$. Many well-studied models beyond the SM explicitly break this global symmetry, and the alternative deserves further attention.

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。

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