Preprint/Report

PUBDB-2019-01545

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Impact of low-$x$ resummation on QCD analysis of HERA data

Abdolmaleki, H. ; Bertone, V. (Corresponding author)Extern* ; Britzger, D. ; Camarda, S. ; Cooper-Sarkar, A. ; Giuli, F. ; Glazov, A.DESY* ; Kusina, A. ; Luszczak, A. ; Olness, F. ; Sapronov, A. ; Shvydkin, P. ; Wichmann, K. ; Zenaiev, O. ; Bonvini, M. ; Team, x. D. (Collaboration Author)

2018

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Please use a persistent id in citations: doi:10.3204/PUBDB-2019-01545

Report No.: DESY-18-017; arXiv:1802.00064

Abstract: 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 $Q^2$ . 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 $F_L$ , it also results in a gluon PDF which is steeply rising at low x for low scales, $Q^2 \simeq 2.5\,\hbox {GeV}^2$ , contrary to the fixed-order NLO and NNLO gluon PDF.

Keyword(s): structure function: longitudinal ; resummation ; small-x ; quantum chromodynamics ; perturbation theory ; higher-order: 1 ; higher-order: 2 ; DESY HERA Stor ; data analysis method ; statistical analysis ; tension ; gluon: distribution function ; deep inelastic scattering ; DGLAP equation ; kinematics

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. LHC: ATLAS

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Database coverage:
; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Report/Journal Article Abdolmaleki, H. ; Bertone, V. ; Britzger, D. ; Camarda, S. ; Cooper-Sarkar, A.DESY* ; Giuli, F. (Corresponding author) ; Glazov, A.DESY* ; Kusina, A. ; Luszczak, A. ; Olness, F. ; Sapronov, A.Extern* ; Shvydkin, P.Extern* ; Wichmann, K.DESY* ; Zenaiev, O.DESY* ; Bonvini, M. ; Team, x. D. (Collaboration Author)
Impact of low-$x$ resummation on QCD analysis of HERA data
The European physical journal / C 78(8), 621 (2018) [10.1140/epjc/s10052-018-6090-8]2018     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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