Use of dispersion relations in hard exclusive processes and the partonic interpretation of deeply virtual Compton scattering

Journal Article · Thu Oct 01 00:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.071501· OSTI ID:21325189

Goldstein, Gary R ^[1]; Liuti, Simonetta ^[2]

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1. Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155 (United States)
2. Department of Physics, University of Virginia, Charlottesville, Virginia 22901 (United States)

Recently dispersion relations have been applied to hard exclusive processes such as deeply virtual Compton scattering, and a holographic principle was proposed that maps out the generalized parton distributions entering the soft matrix elements for the processes from their values on a given kinematical ridge. We examine possible pitfalls associated with the implicit, direct identification in this approach of the physical hadronic states with colored partons, and suggest an improved treatment of this assumption.

• OSTI ID: 21325189
• Journal Information: Physical Review. D, Particles Fields, Vol. 80, Issue 7; Other Information: DOI: 10.1103/PhysRevD.80.071501; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPTON EFFECT
DISPERSION RELATIONS
DISTRIBUTION
HADRONS
HOLOGRAPHY
MATRIX ELEMENTS
SCATTERING