Nucleon structure functions and longitudinal spin asymmetries

Abstract

The chiral constituent quark model (χ CQM) has been used to analyse the phenomenological dependence of the spin independent (F 1 p, n and F 2 p, n ) and the spin dependent (g 2 p, n ) structure functions of the nucleon on the the Bjorken scaling variable x . The implication of the presence of the sea quarks has been discussed for the p and n longitudinal spin asymmetries (A 1 p (x ) and A 1 n (x ) ratio of polarized to unpolarized quark distribution functions for up and down quarks in the p and n , , , and . The results have been compared with the recent available experimental observations.