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arXiv 2409.00218hep-ph
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标准模型有效场论中违反重子数的顶夸克算符约束

Constraints on baryon-number-violating top-quark operators in standard model effective field theory

Hector Gisbert, Antonio Rodríguez-Sánchez, Luiz Vale Silva

AI总结:

本文在 SMEFT 框架下约束违反重子数的顶夸克算符,发现间接限制远强于对撞机直接界限,表明 TeV 能标直接观测重子数违反需严重精细调节。

摘要:

在标准模型有效场论(Standard Model Effective Field Theory)框架内,我们对在 TeV 能标以上违反一个单位重子数的顶夸克算符设定了间接约束。我们发现,这些约束通常比最近从对撞机实验得到的直接界限严格许多个数量级。因此,在 TeV 能标的这些顶夸克可观测量中直接观测到重子数违反,将意味着不同能标上的算符之间存在很大的精细调节。在普适辐射修正或任何已知对称性原理下,这种可能性都不受保护。

英文摘要:

Within the Standard Model Effective Field Theory framework, we set indirect constraints on top quark operators that violate baryon number by one unit above the TeV scale. We find that these constraints are typically many orders of magnitude more stringent than the recently derived direct bounds from collider experiments. Therefore, direct observation of baryon number violation in these top-quark observables at the TeV scale would imply a large fine-tuning among operators across different energy scales. This possibility is not protected under universal radiative corrections or any known symmetry principles.

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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