2003/06/29 by D. P. Brown, Dunstan Brown, Brown, D. P.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0306058
4 pages, 4 figures, Proceedings of Moriond 2003 Conf. on QCD and High Energy Interactions
arxiv created 2003/06/29 · openalex publication_date 2003/06/29 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Measurements of Deeply Virtual Compton Scattering (DVCS) are presented using data collected by the H1 and ZEUS experiments at HERA. The transition from a virtual photon to an on-shell particle is expected to necessitate the use of skewed parton distributions for a theoretical description. The results are compared to theoretical predictions. Diffractive vector meson production measurements from H1 and ZEUS are also presented in which the magnitude of the four-momentum transfer squared |t| at the proton vertex is large. A large |t| is expected to make it possible to perform a perturbative calculation. The results are compared to recent theoretical predictions performed within the framework of perturbative QCD.