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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. © 2007 The American Physical Society.

Registro:

Documento: Artículo
Título:Global analysis of fragmentation functions for pions and kaons and their uncertainties
Autor:De Florian, D.; Sassot, R.; Stratmann, M.
Filiación:Departamento de Fisica, Universidad de Buenos Aires, Pabellon 1, (1428) Buenos Aires, Argentina
Radiation Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
Año:2007
Volumen:75
Número:11
DOI: http://dx.doi.org/10.1103/PhysRevD.75.114010
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:15507998
CODEN:PRVDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v75_n11_p_DeFlorian

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Citas:

---------- APA ----------
De Florian, D., Sassot, R. & Stratmann, M. (2007) . Global analysis of fragmentation functions for pions and kaons and their uncertainties. Physical Review D - Particles, Fields, Gravitation and Cosmology, 75(11).
http://dx.doi.org/10.1103/PhysRevD.75.114010
---------- CHICAGO ----------
De Florian, D., Sassot, R., Stratmann, M. "Global analysis of fragmentation functions for pions and kaons and their uncertainties" . Physical Review D - Particles, Fields, Gravitation and Cosmology 75, no. 11 (2007).
http://dx.doi.org/10.1103/PhysRevD.75.114010
---------- MLA ----------
De Florian, D., Sassot, R., Stratmann, M. "Global analysis of fragmentation functions for pions and kaons and their uncertainties" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 75, no. 11, 2007.
http://dx.doi.org/10.1103/PhysRevD.75.114010
---------- VANCOUVER ----------
De Florian, D., Sassot, R., Stratmann, M. Global analysis of fragmentation functions for pions and kaons and their uncertainties. Phys Rev D Part Fields Gravit Cosmol. 2007;75(11).
http://dx.doi.org/10.1103/PhysRevD.75.114010