Impact of low-x resummation on QCD analysis of HERA data

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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 [Formula: see text] . A resolution of this tension incorporating [Formula: see text] -resummation terms into the HERAPDF fits is invest...

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Autores principales: Abdolmaleki, Hamed, Bertone, Valerio, Britzger, Daniel, Camarda, Stefano, Cooper-Sarkar, Amanda, Giuli, Francesco, Glazov, Alexander, Kusina, Aleksander, Luszczak, Agnieszka, Olness, Fred, Sapronov, Andrey, Shvydkin, Pavel, Wichmann, Katarzyna, Zenaiev, Oleksandr, Bonvini, Marco
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2018
Materias:
Regular Article - Theoretical Physics
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6191127/
https://www.ncbi.nlm.nih.gov/pubmed/30839766
http://dx.doi.org/10.1140/epjc/s10052-018-6090-8
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author Abdolmaleki, Hamed
Bertone, Valerio
Britzger, Daniel
Camarda, Stefano
Cooper-Sarkar, Amanda
Giuli, Francesco
Glazov, Alexander
Kusina, Aleksander
Luszczak, Agnieszka
Olness, Fred
Sapronov, Andrey
Shvydkin, Pavel
Wichmann, Katarzyna
Zenaiev, Oleksandr
Bonvini, Marco
author_facet Abdolmaleki, Hamed
Bertone, Valerio
Britzger, Daniel
Camarda, Stefano
Cooper-Sarkar, Amanda
Giuli, Francesco
Glazov, Alexander
Kusina, Aleksander
Luszczak, Agnieszka
Olness, Fred
Sapronov, Andrey
Shvydkin, Pavel
Wichmann, Katarzyna
Zenaiev, Oleksandr
Bonvini, Marco
collection PubMed
description 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 [Formula: see text] . A resolution of this tension incorporating [Formula: see text] -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 [Formula: see text] , it also results in a gluon PDF which is steeply rising at low x for low scales, [Formula: see text] , contrary to the fixed-order NLO and NNLO gluon PDF.
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spelling pubmed-61911272018-10-31 Impact of low-x resummation on QCD analysis of HERA data Abdolmaleki, Hamed Bertone, Valerio Britzger, Daniel Camarda, Stefano Cooper-Sarkar, Amanda Giuli, Francesco Glazov, Alexander Kusina, Aleksander Luszczak, Agnieszka Olness, Fred Sapronov, Andrey Shvydkin, Pavel Wichmann, Katarzyna Zenaiev, Oleksandr Bonvini, Marco Eur Phys J C Part Fields Regular Article - Theoretical Physics 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 [Formula: see text] . A resolution of this tension incorporating [Formula: see text] -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 [Formula: see text] , it also results in a gluon PDF which is steeply rising at low x for low scales, [Formula: see text] , contrary to the fixed-order NLO and NNLO gluon PDF. Springer Berlin Heidelberg 2018-08-03 2018 /pmc/articles/PMC6191127/ /pubmed/30839766 http://dx.doi.org/10.1140/epjc/s10052-018-6090-8 Text en © The Author(s) 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3
spellingShingle Regular Article - Theoretical Physics
Abdolmaleki, Hamed
Bertone, Valerio
Britzger, Daniel
Camarda, Stefano
Cooper-Sarkar, Amanda
Giuli, Francesco
Glazov, Alexander
Kusina, Aleksander
Luszczak, Agnieszka
Olness, Fred
Sapronov, Andrey
Shvydkin, Pavel
Wichmann, Katarzyna
Zenaiev, Oleksandr
Bonvini, Marco
Impact of low-x resummation on QCD analysis of HERA data
title Impact of low-x resummation on QCD analysis of HERA data
title_full Impact of low-x resummation on QCD analysis of HERA data
title_fullStr Impact of low-x resummation on QCD analysis of HERA data
title_full_unstemmed Impact of low-x resummation on QCD analysis of HERA data
title_short Impact of low-x resummation on QCD analysis of HERA data
title_sort impact of low-x resummation on qcd analysis of hera data
topic Regular Article - Theoretical Physics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6191127/
https://www.ncbi.nlm.nih.gov/pubmed/30839766
http://dx.doi.org/10.1140/epjc/s10052-018-6090-8
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