Pion partonic distributions in a statistical model from pion induced Drell-Yan and J/Ψ production data

被引：13

作者：

Bourrely, Claude ^{[1
]}

Chang, Wen-Chen ^{[2
]}

Peng, Jen-Chieh ^{[3
]}

机构：

[1] Aix Marseille Univ, Univ Toulon, CPT, CNRS, Marseille, France

[2] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[3] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

来源：

PHYSICAL REVIEW D | 2022年 / 105卷 / 07期

基金：

美国国家科学基金会;

关键词：

MUON PAIRS; NUCLEON; ASYMMETRY; SYMMETRY;

D O I：

10.1103/PhysRevD.105.076018

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new analysis to extract pion parton distribution functions (PDFs) within the framework of the statistical model. Starting from the statistical model first developed for the spin-1/2 nucleon, we extend this model to describe the spin-0 pion. Based on a combined fit to both the pion-induced Drell-Yan data and the pion-induced J/Psi production data, a new set of pion PDFs has been obtained. The inclusion of the J/Psi production data in the combined fit has provided additional constraints for better determining the gluon distribution in the pion. We also compare the pion PDFs obtained in the statistical model with other existing pion PDFs.

引用

页数：9

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