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Paper   IPM / Particles / 14911
School of Particles and Accelerator
  Title:   Effects of next-to-leading order DGLAP evolution on generalized parton distributions of the proton and deeply virtual Compton scattering at high energy
1.  Hamzeh Khanpour
2.  Muhammad Goharipour
3.  Vadim Guzey
  Status:   Published
  Journal: Eur. Phys. J. C
  No.:  7
  Vol.:  78
  Year:  2018
  Supported by:  IPM
We studied the effects of NLO Q2 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 Q2 reaching rS=1.5−2 at Q2=100 GeV2 and rg ≈ 1 for gluons in a wide range of Q2. 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.

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