Electron EDM in the complex two-Higgs doublet model
Electron EDM in the complex two-Higgs doublet model
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DOI：
10.1103/physrevd.102.115042
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发表时间：
2020-09
影响因子：
5
通讯作者：
W. Altmannshofer;S. Gori;Nick Hamer;Hiren H. Patel
中科院分区：
文献类型：
--
作者：
W. Altmannshofer;S. Gori;Nick Hamer;Hiren H. Patel
本文首次给出了在复杂的双Higgs偶态模型中电子EDM的完整的双回路计算。我们确认规范无关性，通过演示的规范参数$\xi$的背景场规范和't Hooft $R\xi$规范的解析取消。我们还调查了电子EDM的行为附近的去耦限制，并确定匹配到一个有效的场理论的短距离和长距离的贡献。与早期的研究相比，电子EDM在复杂的两个希格斯偶极子模型，我们注意到在几个地方的分歧，并提供诊断在可能的情况下。我们还提供了轻夸克的EDM的表达式。
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 $\xi$ in the background field gauge and the 't Hooft $R_\xi$ 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.