物理学与电子学

对部分子碎裂为质子的碎裂函数的研究

  • 李培育 ,
  • 阮建红
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  • 华东师范大学 物理与材料科学学院, 上海 200241
李培育,女,硕士研究生,研究方向为粒子物理.E-mail:2324861291@qq.com.

收稿日期: 2018-01-16

  网络出版日期: 2019-03-27

Research on parton fragmentation functions of protons

  • LI Pei-yu ,
  • RUAN Jian-hong
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  • School of Physics and Materials Science, East China Normal University, Shanghai 200241, China

Received date: 2018-01-16

  Online published: 2019-03-27

摘要

部分子的分布函数和碎裂函数是研究和分析高能物理实验的重要基础.对质子的价夸克分布函数qx)和价夸克碎裂为质子的碎裂函数Dx)的关系进行了分析,发现Dx)=(1/6)qx)可以很好地将它们联系起来.因此,可以通过比较成熟的质子的部分子分布函数来构建部分子碎裂为质子的碎裂函数.利用此关系,建立了一组新的碎裂函数的参数式,计算了相应的微分散射截面并与实验进行了比较.此工作可以确定价夸克碎裂为质子的碎裂函数,以减少拟合部分子碎裂函数时的不确定性.

本文引用格式

李培育 , 阮建红 . 对部分子碎裂为质子的碎裂函数的研究[J]. 华东师范大学学报(自然科学版), 2019 , 2019(2) : 106 -115 . DOI: 10.3969/j.issn.1000-5641.2019.02.011

Abstract

Parton distribution functions and fragmentation functions are fundamental to analyzing high energy experiments.The relationship between the proton valence quark distribution function q(x) and fragmentation function D(x) is analyzed. We find that the simple function D(x)=(1/6)q(x) for a valence quark is a good approximation to describe the available data. We set up a group of new parameterizations of fragmentation functions for protons. Differential cross section data were calculated and compared with recent research. We hope that our work can diminish uncertainties when fitting parton fragmentation functions of protons.

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