p¯p→Λ¯Λreaction in the one-gluon-exchange and thePo3models

As an alternative to conventional meson-exchange models, we study exclusive p¯p→Y¯Y production in the nonrelativistic one-gluon-exchange and the ${}_{}{}^3{}_{}{}^{}\mathrm{P}_{\mathrm{o}}^{}{}_{}{}^{}$ model. Adjusting the overall coupling strengths at $P_{\mathrm{lab}=2.0\mathrm{}}$ GeV/c, the main uncertainty originates from the oscillator constant. Though both models yield qualitative agreement with experiment, a more detailed comparison favors the one-gluon-exchange model.