One-Loop Corrections and All Order Factorization In Deeply Virtual Compton Scattering

Details One-Loop Corrections and All Order Factorization In Deeply Virtual Compton Scattering One-Loop Corrections and All Order Factorization In Deeply Virtual Compton Scattering

1998-01-10

arxiv.org/abs/hep-ph/9801260v3

Phys.Rev. D58 (1998) 094018

Physics

High Energy Physics

High Energy Physics - Phenomenology

Replaced with the version submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.58.094018

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 onshell. 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{\rm MS} scheme.

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