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- Title
Effects of next-to-leading order DGLAP evolution on generalized parton distributions of the proton and deeply virtual Compton scattering at high energy.
- Authors
Khanpour, Hamzeh; Goharipour, Muhammad; Guzey, Vadim
- Abstract
We studied the effects of NLO Q2<inline-graphic></inline-graphic> 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<inline-graphic></inline-graphic>, reaching rS=1.5-2<inline-graphic></inline-graphic> at Q2=100<inline-graphic></inline-graphic> GeV2<inline-graphic></inline-graphic> and rg≈1<inline-graphic></inline-graphic> for gluons in a wide range of Q2<inline-graphic></inline-graphic>. 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.
- Subjects
PARTONS; LOGARITHMIC functions; QUARK-gluon interactions; JETS (Nuclear physics); KINEMATICS
- Publication
European Physical Journal C -- Particles & Fields, 2018, Vol 78, Issue 1, p0
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-017-5490-5