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Paper   IPM / Physic / 8576
School of Physics
  Title:   The Flavor Symmetry Breaking of Nucleon Sea in the Valon model
1.  A. N. Khorramian
2.  S. Atashbar Tehrani
  Status:   Published
  Journal: AIP CONF PROC
  Vol.:  915
  Year:  2007
  Pages:   502-505
  Supported by:  IPM
The flavor-asymmetry in the light-quark sea of the nucleon can be obtained from the contributions of unbroken sea quark distributions. We employ the polarized valon model in based on Jacobi polynomial approach and extract the flavor-broken light sea quark distributions which are modeled with the help of a Pauli-blocking ansatz. Our results for Su, Sd, Su, Sd and Ss are in good agreement with recent experimental data for polarized partem distribution from HERMES experimental group and also with GRSV model.

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