Evaluation of the Proton Charge Radius from Electron-Proton Scattering

被引:52
作者
Arrington, John [1 ]
Sick, Ingo [2 ]
机构
[1] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA
[2] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland
关键词
charge radius; elastic scattering; nucleon electromagnetic form factors; ELECTROMAGNETIC FORM-FACTORS; MUONIC HYDROGEN; RMS-RADIUS; PUZZLE;
D O I
10.1063/1.4921430
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In light of the proton radius puzzle, the discrepancy between measurements of the proton charge radius from muonic hydrogen and those from electronic hydrogen and electron-proton (e-p) scattering measurements, we re-examine the charge radius extractions from electron scattering measurements. We provide a recommended value for the proton root-mean-square charge radius, r(E) = 0.879 +/- 0.011 fm, based on a global examination of elastic e-p scattering data. The uncertainties include contributions to account for tension between different data sets and inconsistencies between radii using different extraction procedures. (C) 2015 AIP Publishing LLC.
引用
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页数:5
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