“School of Particles And Accelerator”

Back to Papers Home
Back to Papers of School of Particles And Accelerator

Paper   IPM / Particles And Accelerator / 11229
School of Particles and Accelerator
  Title:   Non-singlet spin structure function in the valon model and low-x-scaling behavior of g1NS and g_1^p
1.  Fatemeh Taghavi Shahri
2.  Firooz Arash
  Status:   Published
  Journal: Phys. Rev. C
  No.:  035205
  Vol.:  82
  Year:  2010
  Pages:   1-7
  Supported by:  IPM
A next-to-leading order QCD calculation of non-singlet spin structure function, g1NS is presented within the valon representation of Hadrons. In the valon model, it is assumed that a nucleon is composed of three dressed valence quarks: the valons which have their own internal structure, the valence quark with its associated sea quarks and gluons. The results are in good agreement with all available data from SMC, E143, HERMES and with the newly released data from COMPASS experiments. It appears that the small x tail of g1NS can be described by a single Regge-type exchange. The relevant parameter of this exchange is given. Finally we show that the polarized proton structure function has a scaling behavior at small x. The relevant parameters of this behavior are given too.

Download TeX format
back to top
scroll left or right