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MEASUREMENT OF DEEPLY VIRTUAL COMPTON SCATTERING WITH A POLARIZED PROTON TARGET
- Source :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2006, 97, pp.072002. ⟨10.1103/PhysRevLett.97.072002⟩, Physical Review Letters, 2006, 97, pp.072002. ⟨10.1103/PhysRevLett.97.072002⟩
- Publication Year :
- 2006
- Publisher :
- American Institute of Physics:2 Huntington Quadrangle, Suite 1NO1:Melville, NY 11747:(800)344-6902, (631)576-2287, EMAIL: subs@aip.org, INTERNET: http://www.aip.org, Fax: (516)349-9704, 2006.
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Abstract
- The longitudinal target-spin asymmetry A_UL for the exclusive electroproduction of high energy photons was measured for the first time in p(e,e'p\gamma). The data have been accumulated at Jefferson Lab with the CLAS spectrometer using 5.7 GeV electrons and a longitudinally polarized NH_3 target. A significant azimuthal angular dependence was observed, resulting from the interference of the Deeply Virtual Compton Scattering and Bethe-Heitler processes. The amplitude of the sin(phi) moment is 0.252 +/- 0.042(stat) +/- 0.020(sys). Theoretical calculations are in good agreement with the magnitude and the kinematic dependence of the target-spin asymmetry, which is sensitive to the generalized parton distributions H and H-tilde.<br />Comment: Modified text slightly, added references
- Subjects :
- Photon
Proton
Nuclear Theory
media_common.quotation_subject
General Physics and Astronomy
FOS: Physical sciences
Parton
Electron
01 natural sciences
Asymmetry
High Energy Physics - Experiment
Nuclear physics
Nuclear Theory (nucl-th)
High Energy Physics - Experiment (hep-ex)
High Energy Physics - Phenomenology (hep-ph)
GENERALIZED PARTON DISTRIBUTIONS
CLAS
0103 physical sciences
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Nuclear Experiment (nucl-ex)
010306 general physics
Nuclear Experiment
NUCLEON
Spin-½
media_common
Physics
010308 nuclear & particles physics
Compton scattering
High Energy Physics - Phenomenology
High Energy Physics::Experiment
GENERALIZED PARTON DISTRIBUTIONS, NUCLEON, CLAS
13.60.Fz, 13.60.Hb, 14.20.Dh
Nucleon
Subjects
Details
- Language :
- English
- ISSN :
- 00319007 and 10797114
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2006, 97, pp.072002. ⟨10.1103/PhysRevLett.97.072002⟩, Physical Review Letters, 2006, 97, pp.072002. ⟨10.1103/PhysRevLett.97.072002⟩
- Accession number :
- edsair.doi.dedup.....97ed7336634be46d0fd4c7e75debd193