Global analysis of nuclear parton distributions

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We present a new global QCD analysis of nuclear parton distribution functions and their uncertainties. In addition to the most commonly analyzed data sets for the deep-inelastic scattering of charged leptons off nuclei and Drell-Yan dilepton production, we include also measurements for neutrino-nucl...

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Autores principales: De Florian, D., Sassot, R., Zurita, P., Stratmann, M.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15507998_v85_n7_p_DeFlorian
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_15507998_v85_n7_p_DeFlorian
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spelling todo:paper_15507998_v85_n7_p_DeFlorian2023-10-03T16:24:38Z Global analysis of nuclear parton distributions De Florian, D. Sassot, R. Zurita, P. Stratmann, M. We present a new global QCD analysis of nuclear parton distribution functions and their uncertainties. In addition to the most commonly analyzed data sets for the deep-inelastic scattering of charged leptons off nuclei and Drell-Yan dilepton production, we include also measurements for neutrino-nucleus scattering and inclusive pion production in deuteron-gold collisions. The analysis is performed at next-to-leading order accuracy in perturbative QCD in a general mass variable flavor number scheme, adopting a current set of free nucleon parton distribution functions, defined accordingly, as reference. The emerging picture is one of consistency, where universal nuclear modification factors for each parton flavor reproduce the main features of all data without any significant tension among the different sets. We use the Hessian method to estimate the uncertainties of the obtained nuclear modification factors and examine critically their range of validity in view of the sparse kinematic coverage of the present data. We briefly present several applications of our nuclear parton densities in hard nuclear reactions at BNL-RHIC, CERN-LHC, and a future electron-ion collider. © 2012 American Physical Society. Fil:De Florian, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Zurita, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15507998_v85_n7_p_DeFlorian
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We present a new global QCD analysis of nuclear parton distribution functions and their uncertainties. In addition to the most commonly analyzed data sets for the deep-inelastic scattering of charged leptons off nuclei and Drell-Yan dilepton production, we include also measurements for neutrino-nucleus scattering and inclusive pion production in deuteron-gold collisions. The analysis is performed at next-to-leading order accuracy in perturbative QCD in a general mass variable flavor number scheme, adopting a current set of free nucleon parton distribution functions, defined accordingly, as reference. The emerging picture is one of consistency, where universal nuclear modification factors for each parton flavor reproduce the main features of all data without any significant tension among the different sets. We use the Hessian method to estimate the uncertainties of the obtained nuclear modification factors and examine critically their range of validity in view of the sparse kinematic coverage of the present data. We briefly present several applications of our nuclear parton densities in hard nuclear reactions at BNL-RHIC, CERN-LHC, and a future electron-ion collider. © 2012 American Physical Society.
format JOUR
author De Florian, D.
Sassot, R.
Zurita, P.
Stratmann, M.
spellingShingle De Florian, D.
Sassot, R.
Zurita, P.
Stratmann, M.
Global analysis of nuclear parton distributions
author_facet De Florian, D.
Sassot, R.
Zurita, P.
Stratmann, M.
author_sort De Florian, D.
title Global analysis of nuclear parton distributions
title_short Global analysis of nuclear parton distributions
title_full Global analysis of nuclear parton distributions
title_fullStr Global analysis of nuclear parton distributions
title_full_unstemmed Global analysis of nuclear parton distributions
title_sort global analysis of nuclear parton distributions
url http://hdl.handle.net/20.500.12110/paper_15507998_v85_n7_p_DeFlorian
work_keys_str_mv AT defloriand globalanalysisofnuclearpartondistributions
AT sassotr globalanalysisofnuclearpartondistributions
AT zuritap globalanalysisofnuclearpartondistributions
AT stratmannm globalanalysisofnuclearpartondistributions
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