Journal of East China Normal University(Natural Sc ›› 2019, Vol. 2019 ›› Issue (2): 106-115.doi: 10.3969/j.issn.1000-5641.2019.02.011

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Research on parton fragmentation functions of protons

LI Pei-yu, RUAN Jian-hong   

  1. School of Physics and Materials Science, East China Normal University, Shanghai 200241, China
  • Received:2018-01-16 Online:2019-03-25 Published:2019-03-27

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.

Key words: distribution function, fragmentation function, structure function, annihilation

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