Polarization Transfer in Proton Compton Scattering at High Momentum Transfer

Journal Article · Fri Oct 01 00:00:00 EDT 2004

OSTI ID:833147

Hamilton, D J; Mamyan, Vahe

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 (TJNAF), Newport News, VA (United States)
• 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; TRN: US0406425
• Resource Relation: Other Information: No journal information given for this preprint; PBD: 1 Oct 2004
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPTON EFFECT
FORECASTING
MOMENTUM TRANSFER
PHOTONS
POLARIZATION
PROTONS
QUARKS
REACTION KINETICS
SPIN