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  • Letter
  • Open Access

Pion fragmentation functions at high energy colliders

Ignacio Borsa* and Rodolfo Sassot†

Daniel de Florian‡

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

  • International Center for Advanced Studies (ICAS) and IFICI, UNSAM, Campus Miguelete, 25 de Mayo y Francia (1650) Buenos Aires, Argentina

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

  • *iborsa@df.uba.ar
  • †sassot@df.uba.ar
  • ‡deflo@unsam.edu.ar
  • §marco.stratmann@uni-tuebingen.de
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Phys. Rev. D 105, L031502 – Published 9 February, 2022

DOI: https://doi.org/10.1103/PhysRevD.105.L031502

Abstract

We revisit the description of pion production in proton-proton collisions in the light of the very precise data taken at the Large Hadron Collider (LHC) over the past decade. First attempts to include LHC results in next-to-leading order global QCD analyses of parton-to-pion fragmentation functions insinuated some conflict between data sets at different center-of-mass system energies. We show that the data can be well described within their uncertainties by a consistent set of pion fragmentation functions once the theoretical scale dependence is taken into account in the global QCD analysis.

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Phys. Rev. D 105, L031502– Published 9 February, 2022
  • Received 28 October 2021
  • Accepted 21 January 2022
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