Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions

Abstract

Unpolarized and beam-polarized four-fold cross sections $\frac{d^4\sigma }{d{Q}^{2}d{x}_{B}dtd\varphi }$ for the $ep\to e^{\prime }{p}^{\prime }\gamma$ reaction were measured using the CLAS detector and the 5.75-GeV polarized electron beam of the Jefferson Lab accelerator, for 110 ($Q^2,x_B,t$) bins over the widest phase space ever explored in the valence-quark region. Several models of Generalized Parton Distributions (GPDs) describe the data well at most of our kinematics. This increases our confidence that we understand the GPD $H$, expected to be the dominant contributor to these observables. Through a leading-twist extraction of Compton Form Factors, these results reveal a tomographic image of the nucleon.

7 pages, 5 figures

References in corpus (5)

• Measurement of Azimuthal Asymmetries With Respect To Both Beam Charge and Transverse Target Polarization in Exclusive Electroproduction of Real Photons
• Beam-helicity asymmetry arising from deeply virtual Compton scattering measured with kinematically complete event reconstruction
• A fitter code for Deep Virtual Compton Scattering and Generalized Parton Distributions
• Single and double spin asymmetries for deeply virtual Compton scattering measured with CLAS and a longitudinally polarized proton target
• Longitudinal target-spin asymmetries for deeply virtual Compton scattering

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