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Deviations from NLO QCD evolution in inclusive HERA data
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We search for deviations from next-to-leading order QCD evolution in HERA structure function data. We compare to data predictions for structure functions in the small x region, obtained by evolving backwards to low Q^2 the results of a parton fit performed in the large Q^2 region, where fixed-order perturbative QCD is certainly reliable. We find evidence for deviations which are qualitatively consistent with the behaviour predicted by small x perturbative resummation, and possibly also by nonlinear evolution effects, but incompatible with next-to-next-to leading order corrections.
Forward citations
Cited by 3 Pith papers
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Progress in the CTEQ-TEA NNLO global QCD analysis
The CTEQ-TEA collaboration releases CT18, a new global fit of nucleon parton distributions at NNLO accuracy based on HERA and LHC data.
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New CTEQ global analysis of quantum chromodynamics with high-precision data from the LHC
New CT18 PDFs at NLO and NNLO from global fit to HERA plus LHC jet, Drell-Yan, top-pair and Z data, with Hessian errors, Lagrange-multiplier studies, and alternate sets for data tensions and scale choices.
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LHC and DIS experimental data in the CT18(Z) global QCD analysis
New CT18-family NNLO PDFs are presented, with a fitted x-dependent factorization scale that lowers the HERA inclusive DIS chi-square by more than 50 units and mimics some low-x resummation effects.
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