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Small-x resummation from HELL

Small-x logarithmic enhancements arising from high-energy gluon emissions affect both the evolution of collinearly-factorized parton densities and partonic coefficient functions. With the higher collider energy reached by the LHC, the prospect of a future high-energy collider, and the recent deep-in...

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Detalles Bibliográficos
Autores principales: Bonvini, Marco, Marzani, Simone, Peraro, Tiziano
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5335595/
https://www.ncbi.nlm.nih.gov/pubmed/28316493
http://dx.doi.org/10.1140/epjc/s10052-016-4445-6
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author Bonvini, Marco
Marzani, Simone
Peraro, Tiziano
author_facet Bonvini, Marco
Marzani, Simone
Peraro, Tiziano
author_sort Bonvini, Marco
collection PubMed
description Small-x logarithmic enhancements arising from high-energy gluon emissions affect both the evolution of collinearly-factorized parton densities and partonic coefficient functions. With the higher collider energy reached by the LHC, the prospect of a future high-energy collider, and the recent deep-inelastic scattering (DIS) results at small-x from HERA, providing phenomenological tools for performing small-x resummation has become of great relevance. In this paper we discuss a framework to perform small-x resummation for both parton evolution and partonic coefficient functions and we describe its implementation in a computer code named High-Energy Large Logarithms (HELL). We present resummed and matched results for the DGLAP splitting functions and, as a proof of principle, for the massless structure functions in DIS. Furthermore, we discuss the uncertainty from subleading terms on our results.
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spelling pubmed-53355952017-03-16 Small-x resummation from HELL Bonvini, Marco Marzani, Simone Peraro, Tiziano Eur Phys J C Part Fields Special Article - Tools for Experiment and Theory Small-x logarithmic enhancements arising from high-energy gluon emissions affect both the evolution of collinearly-factorized parton densities and partonic coefficient functions. With the higher collider energy reached by the LHC, the prospect of a future high-energy collider, and the recent deep-inelastic scattering (DIS) results at small-x from HERA, providing phenomenological tools for performing small-x resummation has become of great relevance. In this paper we discuss a framework to perform small-x resummation for both parton evolution and partonic coefficient functions and we describe its implementation in a computer code named High-Energy Large Logarithms (HELL). We present resummed and matched results for the DGLAP splitting functions and, as a proof of principle, for the massless structure functions in DIS. Furthermore, we discuss the uncertainty from subleading terms on our results. Springer Berlin Heidelberg 2016-11-02 2016 /pmc/articles/PMC5335595/ /pubmed/28316493 http://dx.doi.org/10.1140/epjc/s10052-016-4445-6 Text en © The Author(s) 2016 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 Special Article - Tools for Experiment and Theory
Bonvini, Marco
Marzani, Simone
Peraro, Tiziano
Small-x resummation from HELL
title Small-x resummation from HELL
title_full Small-x resummation from HELL
title_fullStr Small-x resummation from HELL
title_full_unstemmed Small-x resummation from HELL
title_short Small-x resummation from HELL
title_sort small-x resummation from hell
topic Special Article - Tools for Experiment and Theory
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5335595/
https://www.ncbi.nlm.nih.gov/pubmed/28316493
http://dx.doi.org/10.1140/epjc/s10052-016-4445-6
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