# High Precision Measurement of Compton Scattering in the 5 GeV region **Authors:** P. Ambrozewicz, L. Ye, Y. Prok, I. Larin, A. Ahmidouch, K. Baker, V., Baturin, L. Benton, A. Bernstein, V. Burkert, E. Clinton, P.L. Cole, P., Collins, D. Dale, S. Danagoulian, G. Davidenko, R. Demirchyan, A. Deur, A., Dolgolenko, D. Dutta, G. Dzyubenko, A. Evdokimov, G. Fedotov, J. Feng, M., Gabrielyan, L. Gan, H. Gao, A. Gasparian, N. Gevorkyan, S. Gevorkyan, A., Glamazdin, V. Goryachev, L. Guo, V. Gyurjyan, K. Hardy, J. He, E. Isupov, M., Ito, L. Jiang, H. Kang, D. Kashy, M. Khandaker, P. Kingsberry, F. Klein, A., Kolarkar, M. Konchatnyi, O. Korchin, W. Korsch, O. Kosinov, S. Kowalski, M., Kubantsev, A. Kubarovsky, V. Kubarovsky, D. Lawrence, X. Li, M. Levillain, H., Lu, L. Ma, P. Martel, V. Matveev, D. McNulty, B. Mecking, A. Micherdzinska,, B. Milbrath, R. Minehart, R. Miskimen, V. Mochalov, B. Morrison, S. Mtingwa,, I. Nakagawa, S. Overby, E. Pasyuk, M. Payen, K. Park, R Pedroni, W. Phelps,, D. Protopopescu, D. Rimal, B.G. Ritchie, D. Romanov, C Salgado, A. Shahinyan,, A Sitnikov, D. Sober, S. Stepanyan, W. Stephens, V. Tarasov, S. Taylor, A., Teymurazyan, J. Underwood, A. Vasiliev, V. Vishnyakov, D. P. Weygand, M., Wood, Y. Zhang, S. Zhou, B. Zihlmann arXiv: 1903.05529 · 2019-10-29 ## TL;DR This paper reports a high-precision measurement of Compton scattering cross sections at 4.4 to 5.5 GeV, confirming QED predictions with 2% accuracy and providing the first such test at energies above 0.1 GeV. ## Contribution It presents the first high-precision experimental verification of Compton scattering at energies above 0.1 GeV, aligning with advanced theoretical calculations. ## Key findings - Results agree with theoretical predictions including radiative corrections. - Achieved measurement accuracy of 2% or better. - First high-precision test of this process at GeV energies. ## Abstract The cross section of atomic electron Compton scattering $\gamma + e \rightarrow \gamma^\prime + e^\prime $ was measured in the 4.40--5.475 GeV photon beam energy region by the {\em 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. ## Full text _Full body text omitted from this summary view._ Fetch the complete paper as Markdown: https://tomesphere.com/paper/1903.05529/full.md ## Figures 4 figures with captions in the complete paper: https://tomesphere.com/paper/1903.05529/full.md ## References 26 references — full list in the complete paper: https://tomesphere.com/paper/1903.05529/full.md --- Source: https://tomesphere.com/paper/1903.05529