TY - JOUR
T1 - Impact of low-x resummation on QCD analysis of HERA data
AU - Abdolmaleki, Hamed
AU - Bertone, Valerio
AU - Britzger, Daniel
AU - Camarda, Stefano
AU - Cooper-Sarkar, Amanda
AU - Giuli, Francesco
AU - Glazov, Alexander
AU - Kusina, Aleksander
AU - Luszczak, Agnieszka
AU - Olness, Fred
AU - Sapronov, Andrey
AU - Shvydkin, Pavel
AU - Wichmann, Katarzyna
AU - Zenaiev, Oleksandr
AU - Bonvini, Marco
AU - xFitter Developers’ team
PY - 2018/8
Y1 - 2018/8
N2 - 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 Q2. 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 FL, it also results in a gluon PDF which is steeply rising at low x for low scales, Q2≃2.5GeV2, contrary to the fixed-order NLO and NNLO gluon PDF.
AB - 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 Q2. 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 FL, it also results in a gluon PDF which is steeply rising at low x for low scales, Q2≃2.5GeV2, contrary to the fixed-order NLO and NNLO gluon PDF.
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U2 - 10.1140/epjc/s10052-018-6090-8
DO - 10.1140/epjc/s10052-018-6090-8
M3 - Article
AN - SCOPUS:85051111325
SN - 1434-6044
VL - 78
SP - 1
EP - 14
JO - European Physical Journal C
JF - European Physical Journal C
IS - 8
M1 - 621
ER -
