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Paper   IPM / P / 6778
School of Physics
  Title:   Sub-Structures in Hadrons and Proton Structure Functions
1.  F. Arash
2.  Ali N. Khorramian
  Status:   Published
  Journal: Nucl. Phys. B Proc. Suppl.
  No.:  1-2
  Vol.:  99
  Year:  2001
  Pages:   164-167
  Supported by:  IPM
We calculate the partonic structure of constituent quark in the Next-to-Leading Order. Using a convolution method, Structure function of proton is presented. While the constituent quark structure is generated purely perturbatively and accounts for the most part of the hadronic structure, there is a few percent contributions coming from the nonperturbative sector in the hadronic structure. This contribution plays the key role in explaining the SU(2) symmetry breaking of the nucleon sea and the observed violation of Gottfried sum rule. Excellent agreement with data in a wide range of x=[10−6,1] and Q2=[0.5,5000] GeV2 for Fp2 is reached.

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