Global analysis of fragmentation functions for pions and kaons and their uncertainties

We present new sets of pion and kaon fragmentation functions obtained in next-to-leading order combined analyses of single-inclusive hadron production in electron-positron annihilation, proton-proton collisions, and deep-inelastic lepton-proton scattering with either pions or kaons identified in the...

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Autor principal: de Florian, Daniel Enrique
Publicado: 2007
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v75_n11_p_DeFlorian
http://hdl.handle.net/20.500.12110/paper_15507998_v75_n11_p_DeFlorian
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_15507998_v75_n11_p_DeFlorian2023-06-08T16:22:00Z Global analysis of fragmentation functions for pions and kaons and their uncertainties de Florian, Daniel Enrique We present new sets of pion and kaon fragmentation functions obtained in next-to-leading order combined analyses of single-inclusive hadron production in electron-positron annihilation, proton-proton collisions, and deep-inelastic lepton-proton scattering with either pions or kaons identified in the final state. At variance with all previous fits, the present analyses take into account data where hadrons of different electrical charge are identified, which allow one to discriminate quark from antiquark fragmentation functions without the need of nontrivial flavor symmetry assumptions. The resulting sets are in good agreement with all data analyzed, which cover a much wider kinematical range than in previous fits. An extensive use of the Lagrange multiplier technique is made in order to assess the uncertainties in the extraction of the fragmentation functions and the synergy from the complementary data sets in our global analysis. © 2007 The American Physical Society. Fil:De Florian, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v75_n11_p_DeFlorian http://hdl.handle.net/20.500.12110/paper_15507998_v75_n11_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 new sets of pion and kaon fragmentation functions obtained in next-to-leading order combined analyses of single-inclusive hadron production in electron-positron annihilation, proton-proton collisions, and deep-inelastic lepton-proton scattering with either pions or kaons identified in the final state. At variance with all previous fits, the present analyses take into account data where hadrons of different electrical charge are identified, which allow one to discriminate quark from antiquark fragmentation functions without the need of nontrivial flavor symmetry assumptions. The resulting sets are in good agreement with all data analyzed, which cover a much wider kinematical range than in previous fits. An extensive use of the Lagrange multiplier technique is made in order to assess the uncertainties in the extraction of the fragmentation functions and the synergy from the complementary data sets in our global analysis. © 2007 The American Physical Society.
author de Florian, Daniel Enrique
spellingShingle de Florian, Daniel Enrique
Global analysis of fragmentation functions for pions and kaons and their uncertainties
author_facet de Florian, Daniel Enrique
author_sort de Florian, Daniel Enrique
title Global analysis of fragmentation functions for pions and kaons and their uncertainties
title_short Global analysis of fragmentation functions for pions and kaons and their uncertainties
title_full Global analysis of fragmentation functions for pions and kaons and their uncertainties
title_fullStr Global analysis of fragmentation functions for pions and kaons and their uncertainties
title_full_unstemmed Global analysis of fragmentation functions for pions and kaons and their uncertainties
title_sort global analysis of fragmentation functions for pions and kaons and their uncertainties
publishDate 2007
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v75_n11_p_DeFlorian
http://hdl.handle.net/20.500.12110/paper_15507998_v75_n11_p_DeFlorian
work_keys_str_mv AT defloriandanielenrique globalanalysisoffragmentationfunctionsforpionsandkaonsandtheiruncertainties
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