A New Extraction of Pion Parton Distributions in the Statistical Model

Abstract

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 ${\pi }^{-}$-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 ${\pi }^{+}/{\pi }^{-}$ Drell-Yan cross section ratio data, not included in the global fit, has confirmed the predictive power of these new pion PDFs.

5 pages, 5 figures

References in corpus (6)

• Pion Valence Quark Distribution from Matrix Element Calculated in Lattice QCD
• Parton Distribution Functions of the Charged Pion Within The xFitter Framework
• Measurement of longitudinal spin asymmetries for weak boson production in polarized proton-proton collisions at RHIC
• Flavor Structure of the Nucleon Sea
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Cited by in corpus (7)

• The valence quark, sea, and gluon content of the pion from the parton distribution functions and the electromagnetic form factor
• An Analysis of Parton Distribution Functions of the Pion and the Kaon with the Maximum Entropy Input
• Testing momentum dependence of the nonperturbative hadron structure in a global QCD analysis
• NRQCD analysis of charmonium production with pion and proton beams at fixed-target energies
• Analysis of HERA data with a PDF parametrization inspired by quantum statistical mechanics
• GPDs of hadrons and elastic pion-nucleon scattering
• Pion PDFs confronted by Fixed-Target Charmonium Production