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

Abstract

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.

Authors:
; ;  [1];  [2]
  1. Departamento de Fisica, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon 1 (1428) Buenos Aires (Argentina)
  2. (Japan)
Publication Date:
OSTI Identifier:
20929549
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevD.75.114010; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DEEP INELASTIC SCATTERING; ELECTRON-POSITRON INTERACTIONS; FLAVOR MODEL; FRAGMENTATION; GLOBAL ANALYSIS; KAONS; LEPTON-PROTON INTERACTIONS; PARTICLE PRODUCTION; PIONS; PROTON-PROTON INTERACTIONS; QUARKS

Citation Formats

Florian, Daniel de, Sassot, Rodolfo, Stratmann, Marco, and Radiation Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198. Global analysis of fragmentation functions for pions and kaons and their uncertainties. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.114010.
Florian, Daniel de, Sassot, Rodolfo, Stratmann, Marco, & Radiation Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198. Global analysis of fragmentation functions for pions and kaons and their uncertainties. United States. doi:10.1103/PHYSREVD.75.114010.
Florian, Daniel de, Sassot, Rodolfo, Stratmann, Marco, and Radiation Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198. Fri . "Global analysis of fragmentation functions for pions and kaons and their uncertainties". United States. doi:10.1103/PHYSREVD.75.114010.
@article{osti_20929549,
title = {Global analysis of fragmentation functions for pions and kaons and their uncertainties},
author = {Florian, Daniel de and Sassot, Rodolfo and Stratmann, Marco and Radiation Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198},
abstractNote = {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.},
doi = {10.1103/PHYSREVD.75.114010},
journal = {Physical Review. D, Particles Fields},
number = 11,
volume = 75,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 2007},
month = {Fri Jun 01 00:00:00 EDT 2007}
}