标题： 质子电荷半径对缪子氢原子兰姆位移有限尺寸修正的依赖性 显示英文标题

标题： Proton form-factor dependence of the finite-size correction to the Lamb shift in muonic hydrogen

摘要： 通过Pohl等人对μ子氢中2P^{F=2}_{3/2}到2S^{F=1}_{1/2}转变的测量及其后续分析，得出结论认为质子的均方根半径与公认的（CODATA）值相差约4%，相当于4.9个标准差的差异。我们使用结合非微扰相对论狄拉克波函数的束缚态QED，针对一系列理想化的电荷分布以及实验数据的参数化方法，研究与此转变相关的有限尺寸效应——特别是质子电形式因子形状的依赖性，以评论导致上述结论的微扰理论分析能在多大程度上得到确认。我们发现该修正与质子形式因子的形状之间没有统计显著的依赖性。 显示英文摘要

摘要： The measurement of the 2P^{F=2}_{3/2} to 2S^{F=1}_{1/2} transition in muonic hydrogen by Pohl et al. and subsequent analysis has led to the conclusion that the rms radius of the proton differs from the accepted (CODATA) value by approximately 4%, corresponding to a 4.9 sigma discrepancy. We investigate the finite-size effects - in particular the dependence on the shape of the proton electric form-factor - relevant to this transition using bound-state QED with nonperturbative, relativistic Dirac wave-functions for a wide range of idealised charge-distributions and a parameterization of experimental data in order to comment on the extent to which the perturbation-theory analysis which leads to the above conclusion can be confirmed. We find no statistically significant dependence of this correction on the shape of the proton form-factor.