Impact of the electroweak Weinberg operator on the electric dipole moment of electron

IF 5.5 1区物理与天体物理 Q1 Physics and Astronomy Journal of High Energy Physics Pub Date : 2025-02-12 DOI:10.1007/JHEP02(2025)082

Tatsuya Banno, Junji Hisano, Teppei Kitahara, Kiyoto Ogawa, Naohiro Osamura

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Abstract

Recent progress in the electric dipole moment (EDM) measurements of the electron using the paramagnetic atom or molecule is remarkable. In this paper, we calculate a contribution to the electron EDM at three-loop level, introducing the CP-violating Yukawa couplings of new SU(2)_L multiplets. At two-loop level, the Yukawa interactions generate a CP-violating dimension-six operator, composed of three SU(2)_L field strengths, called the electroweak-Weinberg operator. Another one-loop diagram with this operator inserted induces the electron EDM. We derive the matching condition and find that even if new SU(2)_L particles have masses around the TeV scale, the electron EDM may be larger than the Standard Model (SM) contribution to the paramagnetic atom or molecule EDMs. We also discuss the relation between the Barr-Zee diagram contribution at two-loop level and three-loop one, assuming that the SM Higgs has new Yukawa interactions with the SU(2)_L multiplets.

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电弱Weinberg算符对电子电偶极矩的影响

利用顺磁原子或分子测量电子的电偶极矩（EDM）的最新进展是显著的。在本文中，我们计算了在三环水平上对电子EDM的贡献，引入了新的SU(2)L多重态的cp -违反Yukawa耦合。在双环水平上，汤川相互作用产生一个违反cp的六维算子，由三个SU(2)L场强组成，称为电弱-温伯格算子。插入该算子的另一个单环图诱导电子电火花加工。我们推导了匹配条件，发现即使新的SU(2)L粒子的质量在TeV尺度附近，电子EDM对顺磁性原子或分子EDM的贡献也可能大于标准模型（SM）。我们还讨论了假设SM希格斯粒子与SU(2)L多重态具有新的汤川相互作用，在双环和三环水平上的Barr-Zee图贡献之间的关系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of High Energy Physics 物理-物理：粒子与场物理

CiteScore

10.30

自引率

46.30%

发文量

2107

审稿时长

1.5 months

期刊介绍： The aim of the Journal of High Energy Physics (JHEP) is to ensure fast and efficient online publication tools to the scientific community, while keeping that community in charge of every aspect of the peer-review and publication process in order to ensure the highest quality standards in the journal. Consequently, the Advisory and Editorial Boards, composed of distinguished, active scientists in the field, jointly establish with the Scientific Director the journal''s scientific policy and ensure the scientific quality of accepted articles. JHEP presently encompasses the following areas of theoretical and experimental physics: Collider Physics Underground and Large Array Physics Quantum Field Theory Gauge Field Theories Symmetries String and Brane Theory General Relativity and Gravitation Supersymmetry Mathematical Methods of Physics Mostly Solvable Models Astroparticles Statistical Field Theories Mostly Weak Interactions Mostly Strong Interactions Quantum Field Theory (phenomenology) Strings and Branes Phenomenological Aspects of Supersymmetry Mostly Strong Interactions (phenomenology).

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