“…One interesting consequence of the model is the prediction that oT(pp> > oT(pn), Freund (1965) has deduced a relation between nucleon-and pion-nucleon total cross sections of the form: If, in the asymptotic limit, oT(pp)-+oT(pn), equation ( 20) again implies aT(fip) > aT(pn>a I n the simple quark model, where one postulates that a nucleon comprises three quarks, and a meson, a quark and an anti-quark, the basic interaction in, say, the meson-nucleon collision, shown in figure 27, is the single scattering of a quark in one hadron by a quark in the other. On this basis, relations between various total cross sections have been obtained by Levin and Frankfurt (1965), Lipkin and Scheck (1966), Van Hove (1966) andFreund (1966).…”