One-loop corrections and all order factorization in deeply virtual Compton scattering
Xiangdong JiDepartment of Physics, University of Maryland, College Park, Maryland 20742Jonathan OsborneDepartment of Physics, University of Maryland, College Park, Maryland 20742
1998en
ABI
Abstract
We calculate the one-loop corrections to a general off-forward deeply virtual Compton process at leading twist for both parton helicity-dependent and independent cases. We show that the infrared divergences can be factorized entirely into off-forward parton distributions, even when one of the two photons is on shell. We argue that this property persists to all orders in perturbation theory. We obtain the next-to-leading order Wilson coefficients for the general leading-twist expansion of the product of two electromagnetic currents in the $\overline{\mathrm{MS}}$ scheme.
Identifiers
Citations and references
Cited by 20 references