arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.01258hep-ph
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复双希格斯二重态模型中的电子电偶极矩(EDM)

Electron EDM in the complex two-Higgs doublet model

Wolfgang Altmannshofer, Stefania Gori, Nick Hamer, Hiren H. Patel

AI总结:

该研究首次完成复双希格斯二重态模型中电子EDM的双圈完整计算,验证了规范无关性,分析了退耦极限行为与长短程贡献,纠正了此前研究的部分偏差并给出轻夸克EDM表达式。

摘要:

我们首次完成了复双希格斯二重态模型中电子EDM的双圈完整计算。通过在背景场规范和特霍夫特R_ξ规范下解析证明规范参数ξ的抵消,我们验证了结果的规范无关性。我们还研究了退耦极限附近电子EDM的行为,并通过匹配有效场论确定了短程与长程贡献。与此前复双希格斯二重态模型中电子EDM的相关研究相比,我们发现多处结果存在差异,并尽可能给出了原因分析。我们还给出了轻夸克EDM的表达式。

英文摘要:

We present the first complete two loop calculation of the electron EDM in the complex two-Higgs doublet model. We confirm gauge-independence by demonstrating analytic cancellation of the gauge parameter $ξ$ in the background field gauge and the 't Hooft $R_ξ$ gauge. We also investigate the behavior of the electron EDM near the decoupling limit, and determine the short- and long-distance contributions by matching onto an effective field theory. Compared with earlier studies of the electron EDM in the complex two-Higgs doublet model, we note disagreements in several places and provide diagnoses where possible. We also provide expressions for EDMs of light quarks.

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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