Deeply virtual electroproduction of photons and mesons on the nucleon

TL;DR

This paper provides theoretical predictions for deeply virtual Compton scattering and meson electroproduction at high Q^2, highlighting experimental opportunities to probe skewed parton distributions at current lepton facilities.

Contribution

It offers the first estimates of power corrections to leading order amplitudes for these processes in terms of skewed quark distributions.

Findings

Predictions for amplitudes at large Q^2 in the valence region.

Estimates of power corrections to the leading order.

Identification of experimental opportunities at JLab, HERMES, and COMPASS.

Abstract

We give predictions for the leading order amplitudes for deeply virtual Compton scattering and hard meson electroproduction reactions at large Q^2 in the valence region in terms of skewed quark distributions. We give first estimates for the power corrections to these leading order amplitudes. In particular, we outline examples of experimental opportunities to access the skewed parton distributions at the current high-energy lepton facilities : JLab, HERMES and COMPASS.