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Paper   IPM / Physic / 8575
School of Physics
  Title:   The Jacobi Polynomials QCD Analysis for Proton Spin Structure
1.  A. N. Khorramian
2.  S. Atashbar Tehrani
  Status:   Published
  Journal: AIP CONF PROC
  Vol.:  915
  Year:  2007
  Pages:   420-423
  Supported by:  IPM
We present the results of our QCD analysis for polarized quark distribution and structure function xg1(x, Q2). Polarized partem distributions and structure functions of the nucleon are analyzed in the improved valon model. The Polarized valon distribution in a proton and the polarized partem distributions inside the valon are necessary to obtain the polarized partem distributions in a proton. Jacobi polynomial method is used to extract the unknown parameters of the polarized valon distributions by fitting to the available experimental data. The predictions for the NLO calculations of the polarized partem distribution functions are in good agreement with other theoretical models.

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