A next-to-leading order analysis of deeply virtual Compton scattering

Abstract

We present a complete, next-to-leading-order (NLO), leading-twist QCD analysis of deeply virtual Compton scattering (DVCS) observables, in the $\overline{MS}$ scheme, and in the kinematic ranges of the H1, ZEUS and HERMES experiments. We use a modified form of Radyushkin's ansatz for the input model for the generalized parton distributions. We present results for leading order (LO) and NLO for representative observables and find that they compare favourably to the available data.

5 pages, 2 figures, revtex, published version, we modify Radyushkin's ansatz for the GPDs to correct for finite hadronic mass effects, and, using the latest MRST PDFs, now agree with the H1 data (modified figs). Typo in Eq.(3) corrected

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Cited by in corpus (28)

• Generalized Parton Distributions
• Unraveling hadron structure with generalized parton distributions
• Theory of deeply virtual Compton scattering on the nucleon
• Generalized Parton Distributions in the valence region from Deeply Virtual Compton Scattering
• GPD phenomenology and DVCS fitting - Entering the high-precision era
• Measurement of deeply virtual Compton scattering at HERA
• Deeply virtual Compton scattering at small x_B and the access to the GPD H
• A measurement of the Q^2, W and t dependences of deeply virtual Compton scattering at HERA
• Measurement of Deeply Virtual Compton Scattering at HERA
• NLO corrections to timelike, spacelike and double deeply virtual Compton scattering
• On timelike and spacelike deeply virtual Compton scattering at next to leading order
• Modelling generalized parton distributions to describe deeply virtual Compton scattering data
• Deeply virtual Compton scattering off nuclei
• Collider Physics at HERA
• Sum rules and dualities for generalized parton distributions: is there a holographic principle?
• From Bethe-Salpeter Wave Functions to Generalised Parton Distributions
• Border and skewness functions from a leading order fit to DVCS data
• Generalized parton distributions and composite constituent quarks
• Test of two new parameterizations of the Generalized Parton Distribution $H$
• Chiral dynamics and partonic structure at large transverse distances
• Dual parameterization of generalized parton distributions and description of DVCS data
• A detailed QCD analysis of twist-3 effects in DVCS observables
• Generalized Parton Distributions: confining potential effects within AdS/QCD
• Effects of next-to-leading order DGLAP evolution on generalized parton distributions of the proton and deeply virtual Compton scattering at high energy
• Heavy quarks in deeply virtual Compton scattering
• Demystifying generalized parton distributions
• Generalized Parton Distributions -- theoretical review --
• New framework for extracting GPDs from exclusive photon electroproduction