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Polarization Transfer in Proton Compton Scattering at High Momentum Transfer

Journal Article ·
OSTI ID:833147
Compton scattering from the proton was investigated at s = 6.9 GeV{sup 2} and t = -4.0 TeV{sup 2} via polarization transfer from circularly polarized incident photons. The longitudinal and transverse components of the recoil proton polarization were measured. The results are in excellent agreement with a prediction based on a reaction mechanism in which the photon interacts with a single quark carrying the spin of the proton and in disagreement with a prediction of pQCD based on a two-gluon exchange mechanism.
Research Organization:
Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
Sponsoring Organization:
USDOE Office of Energy Research (ER) (US)
DOE Contract Number:
AC05-84ER40150
OSTI ID:
833147
Report Number(s):
JLAB-PHY-04-280; DOE/ER/40150-2906; nucl-ex/0410001
Country of Publication:
United States
Language:
English

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