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, Manuel, Llubaroff, Romina, Sassot, Rodolfo, Stratmann, Marco
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2012
Materias:
Ciencias Exactas
Física
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83634
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83634
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
spellingShingle Ciencias Exactas
Física
Epele, Manuel
Llubaroff, Romina
Sassot, Rodolfo
Stratmann, Marco
Uncertainties in pion and kaon fragmentation functions
topic_facet Ciencias Exactas
Física
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.
format Articulo
Preprint
author Epele, Manuel
Llubaroff, Romina
Sassot, Rodolfo
Stratmann, Marco
author_facet Epele, Manuel
Llubaroff, Romina
Sassot, Rodolfo
Stratmann, Marco
author_sort Epele, Manuel
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
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/83634
work_keys_str_mv AT epelemanuel uncertaintiesinpionandkaonfragmentationfunctions
AT llubaroffromina uncertaintiesinpionandkaonfragmentationfunctions
AT sassotrodolfo uncertaintiesinpionandkaonfragmentationfunctions
AT stratmannmarco uncertaintiesinpionandkaonfragmentationfunctions
bdutipo_str Repositorios
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