Semi-exclusive DVCS

Abstract

We consider Semi-Exclusive Deeply Virtual Compton Scattering, gamma* p \to gamma Y (SECS), where Y is an inclusive state of intermediate mass, Λ_QCD << m_Y << Q. When the photon is produced with a large transverse momentum k_T \sim m_Y the subprocess is hard and the struck quark fragments independently of the target spectators. Using completeness this allows to express the SECS cross section in terms of ordinary parton distributions. Apart from direct comparisons with data (yet to come) new information on Bloom-Gilman duality may be obtained through comparisons of resonance production via DVCS (gamma* p \to gamma N*) with the SECS scaling distribution in m_Y.

6 pages, 2 figures

References in corpus (13)

• Quantum Chromodynamics and Other Field Theories on the Light Cone
• Generalized Parton Distributions
• Hard Exclusive Reactions and the Structure of Hadrons
• Factorization for hard exclusive electroproduction of mesons in QCD
• Elastic Electroproduction of rho Mesons at HERA
• Exclusive Electroproduction of ${\rho }^0$ and $J/\psi$ Mesons at HERA
• Measurement of proton-dissociative diffractive photoproduction of vector mesons at large momentum transfer at HERA
• Diffractive Photoproduction of Rho Mesons with Large Momentum Transfer at HERA
• Semi-Exclusive Processes: New Probes of Hadron Structure
• Subprocess Size in Hard Exclusive Scattering
• Duality in Semi-Exclusive Processes
• Exclusive Vector Meson Production at HERA
• Duality in Semi-Exclusive Processes

Cited by in corpus (1)

• Explicit Model Realizing Parton-Hadron Duality