The space-time structure of hard scattering processes

Abstract

Recent studies of exclusive electroproduction of vector mesons at JLab make it possible for the first time to play with two independent hard scales: the virtuality Q^2 of the photon, which sets the observation scale, and the momentum transfer t to the hadronic system, which sets the interaction scale. They reinforce the description of hard scattering processes in terms of few effective degrees of freedom relevant to the Jlab-Hermes energy range.

4 pages; 5 figures

References in corpus (4)

• Possible evidence of extended objects inside the proton
• Photoproduction of the $\omega$ meson on the proton at large momentum transfer
• Quark propagator and vertex: systematic corrections of hypercubic artifacts from lattice simulations
• Real and Virtual Compton Scattering in a Regge Approach

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