High Precision Measurement of Compton Scattering in the 5 GeV region.

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

PHYSICS LETTERS B（2019）

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摘要

The cross section of atomic electron Compton scattering gamma + e -> gamma' + e' was measured in the 4.400-5.475 GeV photon beam energy region by the PrimEx collaboration at Jefferson Lab with an accuracy of 2.6% 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. (C) 2019 The Author(s). Published by Elsevier B.V.

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