Exclusive Two - Photon Processes : Tests of Qcd at the Amplitude Level
نویسنده
چکیده
L -e-t Exclusive twephoton processes at large momentum transfer, particularly Compton scattering yp + rp and its crossed-channel reactions +fy -+ jip and f5p -+ 77, can provide definitive information on the bound-state distributions of quarks in . hadrons at the amplitude level. ¢ theoretical work has shown that QCD predictions based on the factorization of long and short distance physics are already _~ applicable at momentum transfers of order of a few GeV.
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