The effect of quark exchange in A=3 mirror nuclei and neutron/proton structure functions ratio

摘要

By using the quark-exchange formalism, realistic Faddeev wave functions andFermi motion effect, we investigate deep inelastic electron scattering from A=3mirror nuclei in the deep-valence region. The initial valence quarks in put aretaken from the GRV's next-to-leading order calculations on $F_2^p(x,Q^2)$ whichgive very good fit to the available data in the $(x,Q^2)$-plane. It is shownthat the free neutron to proton structure functions ratio can be extracted fromcorresponding EMC ratios for $^3He$ and $^3H$ mirror nuclei by usingself-consistent iteration procedure and the results are in good agreement withother theoretical models as well as present available experimental data,especially the one expected form the proposed 11 GeV Jefferson Laboratory.