Evaluation of the Proton Charge Radius from Electron-Proton Scattering.

Autor: Arrington, John, Sick, Ingo
Předmět:
Zdroj: Journal of Physical & Chemical Reference Data; 2015, Vol. 44 Issue 3, p1-5, 5p
Abstrakt: 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, rE = 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index