scholarly journals Role of strange and charm quarks in the nucleon spin structure function

1996 ◽  
Vol 53 (3) ◽  
pp. 1191-1198 ◽  
Author(s):  
F. M. Steffens ◽  
A. W. Thomas
Keyword(s):  
Structure Function ◽  
Spin Structure ◽  
Nucleon Spin ◽  
Spin Structure Function ◽  
Charm Quarks ◽  
Nucleon Spin Structure

QUARK DISTRIBUTIONS AND NUCLEON SPIN STRUCTURE

2005 ◽  
Vol 20 (08n09) ◽  
pp. 1923-1926 ◽  
Author(s):  
ALI N. KHORRAMIAN ◽  
A. MIRJALILI ◽  
S. ATASHBAR TEHRANI
Keyword(s):  
Structure Function ◽  
Spin Structure ◽  
Proton Structure Function ◽  
Nucleon Spin ◽  
Spin Dependence ◽  
Parton Distributions ◽  
Proton Structure ◽  
Nucleon Spin Structure ◽  
Spin Contribution ◽  
Good Agreement

In this paper we calculate spin dependence of parton distributions and proton structure function. The polarized valon distributions in a proton and the polarized parton distributions inside the valon are necessary to obtain the polarized parton distributions in a proton. The results of our calculations for the proton structure function, [Formula: see text] are in good agreement with the available experimental data. We obtain the spin contribution and angular momentum of the valons to the proton.

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