One-Loop QCD Corrections to Deeply Virtual Compton Scattering: The Parton Helicity-Independent Case
Xiangdong Ji, Jonathan Osborne
Abstract
We show that the one-loop QCD correction to deeply-virtual Compton scattering can be factorized into the finite perturbative contributions and the collinearly-divergent terms, which correspond to the matrix elements of the off-forward parton distributions. As a by-product, we obtain the next-to-leading order coefficient functions in the generalized operator product expansion of two vector currents.
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