Hadron Structure: the fundamental physics to Access via GPDs
An introductory review of generalized parton distributions (GPDs) is given. The structure of hadrons is the fundamental physics to be accessed via GPDs. GPDs describe hadronic structure on the quark-gluon level and provide a 3-dimensional picture (''tomography'') of hadronic structure. GPDs adequately reflect the quantum-field nature of QCD (correlations, interference). They also provide new insights into spin structure of hadrons (spin-flip distributions, orbital angular momentum). GPDs are sensitive to chiral symmetry breaking effects, a fundamental property of QCD. Furthermore, GPDs unify existing ways of describing hadronic structure. The GPD formalism provides nontrivial relations between different exclusive reactions and also between exclusive and inclusive processes.
- 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:
- 796876
- Report Number(s):
- JLAB-THY-02-27; DOE/ER/40150-2113; TRN: US0201469
- Resource Relation:
- Conference: European Workshop On The QCD Structure Of The Nucleon (QCD-N'02), Ferrara (IT), 04/03/2002--04/06/2002; Other Information: PBD: 1 Apr 2002
- Country of Publication:
- United States
- Language:
- English
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