“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 11441
School of Particles and Accelerator
  Title:   Gluon Polarization In Nucleon
1.  Abolfazl Shahveh
2.  Fatemeh Taghavi-Shahri
3.  Firooz Arash
  Status:   Published
  Journal: Phys. Lett. B
  Vol.:  691
  Year:  2010
  Pages:   32-36
  Supported by:  IPM
In the context of the so-called valon model, we calculate �g g and show that although it is small and compatible with the measured values, the gluon contribution to the spin of nucleon can be sizable. The smallness of �g g in the measured kinematical region should not be interpreted as �g being small. In fact, �g itself at small x, and the �rst moment of the polarized gluon distribution in the nucleon, �g(Q2), are large.

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