Extraction of various five-quark components of the nucleons

We have generalized the approach of Brodsky et al. for the intrinsic charm quark distribution in the nucleons to the light-quark sector involving intrinsic u¯,d¯,s and s¯ sea quarks. We compare the calculations with the existing d¯−u¯, s+s¯, and u¯+d¯−s−s¯ data. The good agreement between the theory and the data allows the extraction of the probabilities for the |uuduu¯〉, |uuddd¯〉, and |uudss¯〉 five-quark Fock states in the proton. We also calculate the x-dependence of the intrinsic charm after taking into consideration the QCD evolution of the intrinsic quark distribution.