A new extraction of pion parton distributions in the statistical model

International audienceWe present a new analysis to extract pion's parton distribution functions (PDFs) in the framework of the statistical model. Starting fromthe statistical model framework first developed for the spin-1/2 nucleon, weapply appropriate modifications taking into account the spin-0 nature ofpion 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 $\pi^-$-induced Drell-Yan data to determine the parameters of thisstatistical 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 $\pi^+/\pi^-$Drell-Yan cross section ratio data, not included in the global fit, hasconfirmed the predictive power of these new pion PDFs