Lamb Shift in Muonic Deuterium

被引：0
作者：
Gorchtein, Mikhail [1 ]
Carlson, Carl E. [2 ]
Vanderhaeghen, Marc [1 ]
机构：
[1] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55128 Mainz, Germany
[2] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA
来源：
WORKSHOP TO EXPLORE PHYSICS OPPORTUNITIES WITH INTENSE, POLARIZED ELECTRON BEAMS AT 50-300 MEV | 2013年 / 1563卷
关键词：
Muonic deuterium; Lamb shift; Dispersion Relations; Nuclear Polarizabilities; ELASTIC ELECTRON-SCATTERING; ISOTOPE SHIFT; HYDROGEN; PROTON; POLARIZABILITY;
D O I：
10.1063/1.4829402
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We consider the two-photon exchange contribution to the 2P-2S Lamb shift in muonic deuterium in the framework of forward dispersion relations. The dispersion integrals are evaluated with minimal model dependence using experimental data on elastic deuteron form factors and inelastic electron-deuteron scattering, both in the quasielastic and hadronic range. The subtraction constant that is required to ensure convergence of the dispersion relation for the forward Compton amplitude T-1 (nu, Q(2)) is related to the deuteron magnetic polarizability beta (Q(2)) and represents the main source of uncertainty in our analysis. We obtain for the Lamb shift Delta E2p-2S = 1.620 +/- 0.190 meV and discuss ways to further reduce this uncertainty.
引用
收藏
页码：171 / 174
页数：4
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