Forward two-photon exchange in elastic lepton-proton scattering and hyperfine-splitting correction

被引：20

作者：

Tomalak, Oleksandr ^{[1
,2
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Kernphys, Mainz, Germany

[2] Johannes Gutenberg Univ Mainz, PRISMA Cluster Excellence, Mainz, Germany

来源：

EUROPEAN PHYSICAL JOURNAL C | 2017年 / 77卷 / 08期

关键词：

POLARIZABILITY CONTRIBUTION; MUONIC HYDROGEN; LAMB SHIFT; CROSS-SECTION; ELECTRONS; RATIO; REAL;

D O I：

10.1140/epjc/s10052-017-5087-z

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We relate the forward two-photon exchange (TPE) amplitudes to integrals of the inclusive lepton-proton scattering cross sections. These relations yield an alternative way for the evaluation of the TPE correction to hyperfine-splitting (HFS) in the hydrogen-like atoms with an equivalent to the standard approach (Iddings, Drell and Sullivan) result implying the Burkhardt-Cottingham sum rule. For evaluation of the individual effects (e.g., elastic contribution) our approach yields a distinct result. We compare both methods numerically on examples of the elastic contribution and the full TPE correction to HFS in electronic and muonic hydrogen.

引用

页数：15

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