Uncertainties in pion and kaon fragmentation functions

We present a detailed assessment of uncertainties in parton-to-pion and parton-to-kaon fragmentation functions obtained in recent global QCD analyses of single-inclusive hadron production data at next-to-leading order accuracy. We use the robust Lagrange multiplier approach for determining uncertain...

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Autores principales: Epele, M., Llubaroff, R., Sassot, R., Stratmann, M.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15507998_v86_n7_p_Epele
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_15507998_v86_n7_p_Epele2023-10-03T16:24:44Z Uncertainties in pion and kaon fragmentation functions Epele, M. Llubaroff, R. Sassot, R. Stratmann, M. We present a detailed assessment of uncertainties in parton-to-pion and parton-to-kaon fragmentation functions obtained in recent global QCD analyses of single-inclusive hadron production data at next-to-leading order accuracy. We use the robust Lagrange multiplier approach for determining uncertainties to validate the applicability of the simpler but approximate Hessian method. Extensive comparisons of the results obtained within both methods are presented for the individual parton-to-pion and kaon fragmentation functions. We provide Hessian eigenvector sets of pion and kaon fragmentation functions that allow one to easily propagate their uncertainties to any observable. Various applications of these sets are presented for pion and kaon production in electron-positron annihilation, lepton-nucleon scattering, and proton-proton collisions. © 2012 American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15507998_v86_n7_p_Epele
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 detailed assessment of uncertainties in parton-to-pion and parton-to-kaon fragmentation functions obtained in recent global QCD analyses of single-inclusive hadron production data at next-to-leading order accuracy. We use the robust Lagrange multiplier approach for determining uncertainties to validate the applicability of the simpler but approximate Hessian method. Extensive comparisons of the results obtained within both methods are presented for the individual parton-to-pion and kaon fragmentation functions. We provide Hessian eigenvector sets of pion and kaon fragmentation functions that allow one to easily propagate their uncertainties to any observable. Various applications of these sets are presented for pion and kaon production in electron-positron annihilation, lepton-nucleon scattering, and proton-proton collisions. © 2012 American Physical Society.
format JOUR
author Epele, M.
Llubaroff, R.
Sassot, R.
Stratmann, M.
spellingShingle Epele, M.
Llubaroff, R.
Sassot, R.
Stratmann, M.
Uncertainties in pion and kaon fragmentation functions
author_facet Epele, M.
Llubaroff, R.
Sassot, R.
Stratmann, M.
author_sort Epele, M.
title Uncertainties in pion and kaon fragmentation functions
title_short Uncertainties in pion and kaon fragmentation functions
title_full Uncertainties in pion and kaon fragmentation functions
title_fullStr Uncertainties in pion and kaon fragmentation functions
title_full_unstemmed Uncertainties in pion and kaon fragmentation functions
title_sort uncertainties in pion and kaon fragmentation functions
url http://hdl.handle.net/20.500.12110/paper_15507998_v86_n7_p_Epele
work_keys_str_mv AT epelem uncertaintiesinpionandkaonfragmentationfunctions
AT llubaroffr uncertaintiesinpionandkaonfragmentationfunctions
AT sassotr uncertaintiesinpionandkaonfragmentationfunctions
AT stratmannm uncertaintiesinpionandkaonfragmentationfunctions
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