2009/01/01 by C. Weiss, Donald G. Crabb, Yelena Prok +4 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1063/1.3215623
published as AIP Conf.Proc.1149:150-160,2009 · 10 pages, 6 figures. Proceedings of SPIN2008, University of Virginia, October 6-11, 2008
openalex publication_date 2009/01/01 · arxiv created 2009/02/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29
We summarize recent developments in understanding the concept of generalized parton distributions (GPDs), its relation to nucleon structure, and its application to high‐Q2 electroproduction processes. Following a brief review of QCD factorization and transverse nucleon structure, we discuss (a) new theoretical methods for the analysis of deeply‐virtual Compton scattering (t‐channel‐based GPD parametrizations, dispersion relations); (b) the phenomenology of hard exclusive meson production (experimental tests of dominance of small‐size configurations, model‐independent comparative studies); (c) the role of GPDs in small‐x physics and pp scattering (QCD dipole model, central exclusive diffraction). We emphasize the usefulness of the transverse spatial (or impact parameter) representation for both understanding the reaction mechanism in hard exclusive processes and visualizing the physical content of the GPDs.