Effects of next-to-leading order DGLAP evolution on generalized parton distributions of the proton and deeply virtual Compton scattering at high energy

Abstract

We studied the effects of NLO $Q^2$ evolution of generalized parton distributions (GPDs) using the aligned-jet model for the singlet quark and gluon GPDs at an initial evolution scale. We found that the skewness ratio for quarks is a slow logarithmic function of $Q^2$ reaching $r^S=1.5-2$ at $Q^2=100$ GeV${}^2$ and $r^g\approx 1$ for gluons in a wide range of $Q^2$. Using the resulting GPDs, we calculated the DVCS cross section on the proton in NLO pQCD and found that this model in conjunction with modern parameterizations of proton PDFs (CJ15 and CT14) provides a good description of the available H1 and ZEUS data in a wide kinematic range.

arXiv comment13 pages, 10 figures. Matches the published version

References in corpus (76)

• New parton distribution functions from a global analysis of quantum chromodynamics
• Parton distributions in the LHC era: MMHT 2014 PDFs
• Implications of CTEQ global analysis for collider observables
• Wave Functions, Evolution Equations and Evolution Kernels from Light-Ray Operators of QCD
• Generalized Parton Distributions
• Deeply Virtual Compton Scattering
• Nonforward Parton Distributions
• Unraveling hadron structure with generalized parton distributions
• Hard Exclusive Reactions and the Structure of Hadrons
• Factorization for hard exclusive electroproduction of mesons in QCD
• A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector
• Off-Forward Parton Distributions
• Theory of deeply virtual Compton scattering on the nucleon
• Generalized parton distributions and strong forces inside nucleons and nuclei
• Uncertainties of predictions from parton distribution functions II: the Hessian method
• Skewed and double distributions in pion and nucleon
• Deeply virtual electroproduction of photons and mesons on the nucleon : leading order amplitudes and power corrections
• Constraints on large-$x$ parton distributions from new weak boson production and deep-inelastic scattering data
• Nucleon Generalized Parton Distributions from Full Lattice QCD
• Proof of Factorization for Deeply Virtual Compton Scattering in QCD
• Nucleon Form Factors from Generalized Parton Distributions
• Double distributions and evolution equations
• Generalized Parton Distributions in the valence region from Deeply Virtual Compton Scattering
• GPD phenomenology and DVCS fitting - Entering the high-precision era
• Deeply virtual Compton scattering at small x_B and the access to the GPD H
• Measurement of deeply virtual Compton scattering at HERA
• Measurement of Deeply Virtual Compton Scattering at HERA
• Symmetries and structure of skewed and double distributions
• Evolution and models for skewed parton distributions
• Off-forward quark distributions of the nucleon in the large N_c limit
• A Study of Off-Forward Parton Distributions
• Virtual Compton Scattering off the nucleon
• Broken conformal invariance and spectrum of anomalous dimensions in QCD
• A Critical Appraisal and Evaluation of Modern PDFs
• Towards a fitting procedure for deeply virtual Compton scattering at next-to-leading order and beyond
• A measurement of the Q^2, W and t dependences of deeply virtual Compton scattering at HERA
• Measurement of Deeply Virtual Compton Scattering and its t-dependence at HERA
• Nucleon form factors and moments of generalized parton distributions using $N_f=2+1+1$ twisted mass fermions
• Exclusive photoproduction of a heavy vector meson in QCD
• DVCS on the nucleon : study of the twist-3 effects
• From hard exclusive meson electroproduction to deeply virtual Compton scattering
• Deeply Virtual Compton Scattering and its Beam Charge Asymmetry in e^\pm p Collisions at HERA
• Dispersion representations for hard exclusive processes
• Nondiagonal Parton Distributions in the Leading Logarithmic Approximation
• Evolution kernels of skewed parton distributions: method and two-loop results
• Measurement of Deeply Virtual Compton Scattering at HERA
• Modelling generalized parton distributions to describe deeply virtual Compton scattering data
• A detailed next-to-leading order QCD analysis of deeply virtual Compton scattering observables
• Diffractive Exclusive Photon Production in DIS at HERA
• A fitter code for Deep Virtual Compton Scattering and Generalized Parton Distributions
• Next-to-leading order evolution of twist-two conformal operators: The abelian case
• A next-to-leading order QCD analysis of deeply virtual Compton scattering amplitudes
• Exclusive $J/\psi$ and ${\rm Y}$ photoproduction and the low $x$ gluon
• Neural network generated parametrizations of deeply virtual Compton form factors
• Generalized Parton Distributions from Deep Virtual Compton Scattering at CLAS
• Generalized parton distributions and composite constituent quarks
• CTEQ-TEA parton distribution functions and HERA Run I and II combined data
• Deeply Virtual Compton Scattering at a Proposed High-Luminosity Electron-Ion Collider
• The dual parameterization of the proton generalized parton distribution functions H and E and description of the DVCS cross sections and asymmetries
• Exploring skewed parton distributions with two body models on the light front II: covariant Bethe-Salpeter approach
• A next-to-leading order analysis of deeply virtual Compton scattering
• Reconstruction of non-forward evolution kernels
• Integral representations for nonperturbative GPDs in terms of perturbative diagrams
• Deeply virtual Compton scattering beyond next-to-leading order: the flavor singlet case
• Dual parameterization of generalized parton distributions and description of DVCS data
• Exclusive evolution kernels in two-loop order: parity even sector
• Exploring Skewed Parton Distributions with Two-body Models on the Light Front I: bimodality
• Next-to-next-to leading order corrections to deeply virtual Compton scattering: the non-singlet case
• A detailed QCD analysis of twist-3 effects in DVCS observables
• Diagonal input for the evolution of off-diagonal partons
• On the mistake in the implementation of the minimal model of the dual parameterization and resulting inability to describe the high-energy DVCS data
• Double distributions for the proton
• Modeling Nucleon Generalized Parton Distributions
• Generalised parton distributions at HERA and prospects for COMPASS
• Diffractive phenomena in high energy processes
• The generalized parton distributions of the nucleon in the NJL model based on the Faddeev approach

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• Determination of generalized parton distributions through a simultaneous analysis of axial form factor and wide-angle Compton scattering data
• Phenomenology of leading nucleon production in $ep$ collisions at HERA in the framework of fracture functions
• Ratio of the structure functions and the color dipole model bound
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