High Precision Measurement of Compton Scattering in the 5 GeV region
Abstract
The cross section of atomic electron Compton scattering γ + e → γ + e was measured in the 4.40--5.475 GeV photon beam energy region by the PrimEx collaboration at Jefferson Lab with an accuracy of 2\% and less. The results are consistent with theoretical predictions that include next-to-leading order radiative corrections. The measurements provide the first high precision test of this elementary QED process at beam energies greater than 0.1 GeV.
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