Parton Distributions of Pions in the Valon Model

作     者：杨纯斌 

作者机构：InstituteofParticlePhysicsHuazhongNormalUniversityWuhan430079 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2003年第20卷第6期

页      面：821-824页

核心收录：

学科分类：07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：国家自然科学基金 

主　　题：hydrogen ions pi-Mesons Local Maximum structure functions Quarks 

摘      要：Based on the universality of the parton distributions inside valons, parton distributions of pions are investigated and parametrized from the experimentally given parton distributions of proton within the valon model. The structure function F_2(x) is given at fixed scale Q_0~2 = 1 GeV~2. Due to the abundance of the pair numbers of sea quarks at a very small x region, the structure function decreases rapidly for small x to a local minimum. Then from the contribution of the valence quarks, F_2(x) increases to a local maximum at x approx= 0.5.