A new extraction of pion parton distributions in the statistical model

Claude Bourrely, Franco Buccella, Jen Chieh Peng

Research output: Contribution to journalArticlepeer-review


We present a new analysis to extract pion's parton distribution functions (PDFs) in the framework of the statistical model. Starting from the statistical model framework first developed for the spin-1/2 nucleon, we apply appropriate modifications taking into account the spin-0 nature of pion and the isospin and charge-conjugation symmetry properties. This results in a significant reduction of the number of parameters compared to a recent work to extract pion's PDFs. Using π-induced Drell-Yan data to determine the parameters of this statistical model approach, we show that a good description of these experimental data with Next-to-Leading order QCD calculations can be obtained. Good agreement between the calculations and the π+ Drell-Yan cross section ratio data, not included in the global fit, has confirmed the predictive power of these new pion PDFs.

Original languageEnglish (US)
Article number136021
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
StatePublished - Feb 10 2021


  • Drell-Yan process
  • Pion parton distributions
  • Statistical approach

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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