Deeply virtual Compton scattering in next-to-leading order

Abstract

We study the amplitude of deeply virtual Compton scattering in next-to-leading order of perturbation theory including the two-loop evolution effects for different sets of skewed parton distributions (SPDs). It turns out that in the minimal subtraction scheme the relative radiative corrections are of order 20-50%. We analyze the dependence of our predictions on the choice of SPD, that will allow to discriminate between possible models of SPDs from future high precision experimental data, and discuss shortly theoretical uncertainties induced by the radiative corrections.

10 pages, LaTeX, 3 figures

References in corpus (3)

• Evolution and models for skewed parton distributions
• Exclusive evolution kernels in two-loop order: parity even sector
• Single spin asymmetry in DVCS

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