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Download or read book Deeply Virtual Exclusive Processes and Generalized Parton Distributions written by and published by . This book was released on 2011 with total page 12006 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of the comprehensive program in Deeply Virtual Exclusive Scattering at Jefferson Laboratory is to create transverse spatial images of quarks and gluons as a function of their longitudinal momentum fraction in the proton, the neutron, and in nuclei. These functions are the Generalized Parton Distributions (GPDs) of the target nucleus. Cross section measurements of the Deeply Virtual Compton Scattering (DVCS) reaction ep 2!ep[gamma] in Hall A support the QCD factorization of the scattering amplitude for Q^2 e"2 GeV^2. Quasi-free neutron-DVCS measurements on the Deuteron indicate sensitivity to the quark angular momentum sum rule. Fully exclusive H(e, e'p[gamma]) measurements have been made in a wide kinematic range in CLAS with polarized beam, and with both unpolarized and longitudinally polarized targets. Existing models are qualitatively consistent with the JLab data, but there is a clear need for less constrained models. Deeply virtual vector meson production is studied in CLAS. The 12 GeV upgrade will be essential for for these channels. The [rho] and [omega] channels reactions offer the prospect of flavor sensitivity to the quark GPDs, while the [phi]-production channel is dominated by the gluon distribution.