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Paper   IPM / Physic / 7755
School of Physics
  Title:   Polarized Parton Distributions in the Approach of Complete Renormalization Group Improvement
  Author(s): 
1.  A. Mirjalili
2.  S. Atashbar Tehrani
3.  Ali N. Khorramian
  Status:   In Proceedings
  Proceeding: Proceedings of 16th International Spin Physics Symposium, SPIN2004, October 10-16, 2004 in Trieste, Italy
  Year:  2005
  Supported by:  IPM
  Abstract:
We use from valon model in polarized case to obtain the parton distribution functions (PDFs) . Valon is defined by the valence quark and associated sea quarks plus gluons in the dressing processes of QCD. The approach of complete renormalization group improvement is introduced. We employ this approach to obtain the polarized parton distribution functions which are based on using the phenomenological valon model. We compared singlet and non-singlet moments and also the obtained PDFs in our new approach and the conventional perturbative QCD approach. There is a good agreement between the results of these two approaches.

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