Relativistic corrections to the Bethe logarithm for the 2 3S and 2 3P states of He

被引：28
|
作者：
Yerokhin, Vladimir A. [1 ]
Patkos, Vojtech [2 ]
Pachucki, Krzysztof [3 ]
机构：
[1] Peter Great St Petersburg Polytech Univ, Ctr Adv Studies, Polytekhnicheskaya 29, St Petersburg 195251, Russia
[2] Charles Univ Prague, Fac Math & Phys, Ke Karlovu 3, Prague 12116 2, Czech Republic
[3] Univ Warsaw, Fac Phys, Pasteura 5, PL-02093 Warsaw, Poland
来源：
PHYSICAL REVIEW A | 2018年 / 98卷 / 03期
关键词：
LAMB SHIFT; HELIUM; TRANSITION; FREQUENCY; PROTON; HYDROGEN; ENERGY; SIZE;
D O I：
10.1103/PhysRevA.98.032503
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
With this work we start a project calculating the QED contribution of order alpha(7)m to the 2(3)P-2(3)S transition energy in helium, aiming for an accurate determination of the nuclear charge radius r(E) from measurements of the corresponding transition frequency. Together with the complementary determination of r(E) from muonic helium, this project will provide a stringent test of universality of electromagnetic interactions of leptons in the Standard Model. We report a calculation of the relativistic corrections to the Bethe logarithm for the 2(3)S and 2(3)P states, which is the most numerically demanding part of the project.
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页数：12
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