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Parton-to-pion fragmentation reloaded

Daniel de Florian* and R. Sassot†

Manuel Epele‡

Roger J. Hernández-Pinto§

Marco Stratmann∥

  • Departamento de Física and IFIBA, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 1, (1428) Buenos Aires, Argentina

  • Instituto de Física La Plata, CONICET - UNLP, Departamento de Física, Facultad de Ciencias Exactas, Universidad de La Plata, C.C. 69, La Plata 1900, Argentina

  • Departamento de Física and IFIBA, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 1, (1428) Buenos Aires, Argentina and Instituto de Física Corpuscular, Universitat de València-Consejo Superior de Investigaciones Científicas, Parc Cientific, E-46980 Paterna, Valencia, Spain

  • Institute for Theoretical Physics, University of Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany

  • *deflo@df.uba.ar
  • †sassot@df.uba.ar
  • ‡manuepele@gmail.com
  • §roger@df.uba.ar
  • ∥marco.stratmann@uni-tuebingen.de
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Phys. Rev. D 91, 014035 – Published 29 January, 2015

DOI: https://doi.org/10.1103/PhysRevD.91.014035

Abstract

We present a new, comprehensive global analysis of parton-to-pion fragmentation functions at next-to-leading-order accuracy in QCD. The obtained results are based on the latest experimental information on single-inclusive pion production in electron-positron annihilation, lepton-nucleon deep-inelastic scattering, and proton-proton collisions. An excellent description of all data sets is achieved, and the remaining uncertainties in parton-to-pion fragmentation functions are estimated based on the Hessian method. Extensive comparisons to the results from our previous global analysis are performed.

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Phys. Rev. D 91, 014035– Published 29 January, 2015
  • Received 24 October 2014

© 2015 American Physical Society

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