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arXiv 2109.15085hep-ph
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6维单圈电偶极矩SMEFT

Electric dipole moments at one-loop in the dimension-6 SMEFT

Jonathan Kley, Tobias Theil, Elena Venturini, Andreas Weiler

摘要:

本文给出了标准模型有效场论(SMEFT)中轻子和中子电偶极矩(EDM)的完整表达式,直到1圈和6维水平,包括RG运行贡献和有限修正。后者在不重整化偶极子的算子的情况下起着重要的作用,但也有一类算子,如果新的物理标度在$Λ=5$ TeV左右,它们提供了总1-loop贡献的重要部分$10-20\%$。我们提出了完整的一套边界上的每个单独的威尔逊系数有助于使用当前的实验约束,以及从未来的实验,预计将提高至少一个数量级的EDM。

英文摘要:

In this paper we present the complete expressions of the lepton and neutron electric dipole moments (EDMs) in the Standard Model Effective Field Theory (SMEFT), up to 1-loop and dimension-6 level and including both RG running contributions and finite corrections. The latter play a fundamental role in the cases of operators that do not renormalize the dipoles, but there are also classes of operators for which they provide an important fraction, $10-20\%$, of the total 1-loop contribution, if the new physics scale is around $Λ=5$ TeV. We present the full set of bounds on each individual Wilson coefficient contributing to the EDMs using both the current experimental constraints, as well as those from future experiments, which are expected to improve by at least an order of magnitude.

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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