| Summary: | The chiral constituent quark model (χCQM) has been used to analyse the phenomenological dependence of the spin independent (F1p, n and F2p, n) and the spin dependent (g2p, 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 (A1p (x)
and A1n (x) ratio of polarized to unpolarized quark distribution functions for up and down quarks in the p and n Δup(x)up(x)${{\Delta {u^p}(x)} \over {{u^p}(x)}}$, Δdp(x)dp(x)${{\Delta {d^p}(x)} \over {{d^p}(x)}}$, Δun(x)un(x)${{\Delta {u^n}(x)} \over {{u^n}(x)}}$, and Δdn(x)dn(x)${{\Delta {d^n}(x)} \over {{d^n}(x)}}$. The results have been compared with the recent available experimental observations.
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