Large Long-Distance Contributions to the Electric Dipole Moments of Charged Leptons in the Standard Model

被引：45

作者：

Yamaguchi, Yasuhiro ^{[1
,2
]}

Yamanaka, Nodoka ^{[3
,4
]}

机构：

[1] Japan Atom Energy Agcy JAEA, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[2] RIKEN, RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan

[3] Univ Massachusetts, Amherst Ctr Fundamental Interact, Dept Phys, Amherst, MA 01003 USA

[4] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 125卷 / 24期

关键词：

UPPER LIMIT; ENHANCEMENT FACTOR; VECTOR-MESONS; CESIUM ATOM; CP-VIOLATION; GAUGE BOSONS; WEAK DECAYS; QUARK;

D O I：

10.1103/PhysRevLett.125.241802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We reevaluate the electric dipole moment (EDM) of charged leptons in the standard model using hadron effective models. We find unexpectedly large EDM generated by the hadron level long-distance effect, d(e) = 5.8 x 10(-40), d(mu) = 1.4 x 10(-38), and d(tau) = -7.3 x 10(-38) e cm, with an error bar of 70%, exceeding the conventionally known four-loop level elementary contribution by several orders of magnitude.

引用

页数：7

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