“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 12271
School of Particles and Accelerator
  Title:   Polarized Parton Distributions in Symmetry Breaking Scenario
1.  Fatemeh Arbabifar
2.  Ali Naghi Khorramian
3.  Shahin Atashbar Tehrani
  Status:   In Proceedings
  Proceeding: XIV Advanced Research Workshop on High Energy Spin Physics (DSPIN-11)
  Year:  2012
  Pages:   41-44
  Supported by:  IPM
The results of our new QCD analysis of helicity parton distributions of the nucleon up to NLO order will be presented. Doing a QCD fit on newest inclusive and semi-inclusive polarized deep inelastic scattering data, we are able to extract polarized structure function of nucleons by choosing new parton distributions at input scale Q02 . Particulary we have calculated parton distributions in SU(2) and SU(3) symmetry breaking scenario and the results are in good agreement with the experimental data and the most precise theoretical model obtained by DSSV09.

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