Next-to-next-to leading order corrections to deeply virtual Compton scattering: the non-singlet case

Details Next-to-next-to leading order corrections to deeply virtual Compton scattering: the non-singlet case Next-to-next-to leading order corrections to deeply virtual Compton scattering: the non-singlet case

2005-10-10

arxiv.org/abs/hep-ph/0510109v2

Phys.Lett.B634:227-234,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 2 figures, minor corrections, Phys. Lett. B version

Scientific paper

10.1016/j.physletb.2006.01.036

We study perturbative QCD corrections to deeply virtual Compton scattering on an unpolarized nucleon target in the flavor non-singlet sector to next-to-next-to-leading order accuracy, restricting ourselves to the kinematically dominant amplitude. The difference between the standard minimal subtraction and the conformal scheme, in which conformal symmetry is manifest, is studied to next-to-leading order. Beyond this order we employ conformal symmetry for the evaluation of perturbative corrections. Within a certain class of generalized parton distributions we find moderate radiative corrections.

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