Polarization Transfer in Proton Compton Scattering at High Momentum Transfer
arXiv:nucl-ex/0410001 · doi:10.1103/PhysRevLett.94.242001
Abstract
Compton scattering from the proton was investigated at s=6.9 (GeV/c)**2 and \t=-4.0 (GeV/c)**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.
References in corpus (9)
- Measurement of GEp/GMp in ep -> ep to Q2 = 5.6 GeV2
- Measurement of the Beam-Spin Azimuthal Asymmetry Associated with Deeply-Virtual Compton Scattering
- Observation of exclusive DVCS in polarized electron beam asymmetry measurements
- Nonforward parton densities and soft mechanism for form factors and wide-angle Compton scattering in QCD
- Perturbative and non-perturbative QCD corrections to wide-angle Compton scattering
- Recalculation of Proton Compton Scattering in Perturbative QCD
- Proton mass effects in wide-angle Compton scattering
- Real and Virtual Compton Scattering in a Regge Approach
- Handling the Handbag Diagram in Compton Scattering on the Proton
Cited by in corpus (14)
- Nucleon form factors, generalized parton distributions and quark angular momentum
- Transition between nuclear and quark-gluon descriptions of hadrons and light nuclei
- Two-photon exchange corrections to elastic electron-proton scattering at large momentum transfer within the SCET approach
- Compton Scattering Cross Section on the Proton at High Momentum Transfer
- Angular dependence of recoil proton polarization in high-energy γd \to p n
- Real and Virtual Nucleon Compton Scattering in the Perturbative Limit
- Determination of generalized parton distributions through a simultaneous analysis of axial form factor and wide-angle Compton scattering data
- Twist-3 contributions to wide-angle photoproduction of pions
- The GPD H-tilde and spin correlations in wide-angle Compton scattering
- Polarization Transfer in Wide-Angle Compton Scattering and Single-Pion Photoproduction from the Proton
- QCD radiative corrections to the soft spectator contribution in the wide angle Compton scattering
- Design and Performance of the Spin Asymmetries of the Nucleon Experiment
- Wide-angle photo- and electroproduction of pions to twist-3 accuracy
- Virtual Compton Scattering and Neutral Pion Electroproduction in the Resonance Region up to the Deep Inelastic Region at Backward Angles