%0 Electronic Article
%A Abdolmaleki, Hamed
%A Bertone, Valerio
%A Britzger, Daniel
%A Camarda, Stefano
%A Cooper-Sarkar, Amanda
%A Giuli, Francesco
%A Glazov, Alexander
%A Kusina, Aleksander
%A Luszczak, Agnieszka
%A Olness, Fred
%A Sapronov, Andrey
%A Shvydkin, Pavel
%A Wichmann, Katarzyna
%A Zenaiev, Oleksandr
%A Bonvini, Marco
%T Impact of low-x resummation on QCD analysis of HERA data
%N DESY-18-017
%M PUBDB-2019-01545
%M DESY-18-017
%M arXiv:1802.00064
%D 2018
%X Fits to the final combined HERA deep-inelastic scattering cross-section data within the conventional DGLAP framework of QCD have shown some tension at low x and low Q<sup>2</sup> . A resolution of this tension incorporating ln(1/x) -resummation terms into the HERAPDF fits is investigated using the xFitter program. The kinematic region where this resummation is important is delineated. Such high-energy resummation not only gives a better description of the data, particularly of the longitudinal structure function F<sub>L</sub> , it also results in a gluon PDF which is steeply rising at low x for low scales, Q<sup>2</sup>  ≅ 2.5 GeV<sup>2</sup> , contrary to the fixed-order NLO and NNLO gluon PDF.
%K structure function: longitudinal (INSPIRE)
%K resummation (INSPIRE)
%K small-x (INSPIRE)
%K quantum chromodynamics (INSPIRE)
%K perturbation theory (INSPIRE)
%K higher-order: 1 (INSPIRE)
%K higher-order: 2 (INSPIRE)
%K DESY HERA Stor (INSPIRE)
%K data analysis method (INSPIRE)
%K statistical analysis (INSPIRE)
%K tension (INSPIRE)
%K gluon: distribution function (INSPIRE)
%K deep inelastic scattering (INSPIRE)
%K DGLAP equation (INSPIRE)
%K kinematics (INSPIRE)
%F PUB:(DE-HGF)25 ; PUB:(DE-HGF)29
%9 PreprintReport
%R 10.3204/PUBDB-2019-01545
%U https://bib-pubdb1.desy.de/record/420534