THE ROLE OF NUCLEON-NUCLEON CORRELATIONS IN THE QUARK DISTRIBUTIONS IN NUCLEI

Using the non-relativistic quark model of the nucleons and considering the quark exchange between at most two nucleons, we calculate the qua rk distributions for the ground state of the doubly-magic nuclei, i.e. He-4, O-16 and Ca-40. We take into the account the effect of two-body nucleon correlations which depend on spin, isospin, total angular mom entum, tenser operators and the relative and centre-of-mass coordinate s of two nucleons. The harmonic-oscillator wavefunctions are used as t he uncorrelated states and a local density approximation is performed to convert the infinite nuclear-matter correlation functions to finite ones. The result is compared with results due to Catara and Sambataro .