Looking for Exotic Multiquark States in Nonleptonic B Decays *

Recent data on inclusive B decays into charmonium states taken by the CLEO collaboration suggest that a sizeable fraction of the nonleptonic decays may consist of the J/$Rp three body final state, corresponding to a distinct enhancement in the inclusive J/I/I momentum distribution. The kinematical boundary of this structure corresponds to the case where the J/~/I recoils nearly monoenergetically in the B rest system against a partner having mass of 21 2 GeV. This may allow the observation of a A p bound state near or just below threshold; i.e., strange baryonium, even if the production rate is small. Using a phase space approach to the B meson decay, we study the J/T/I momentum distribution and the effect of baryonium formation. We also discuss the possible observation of pentaquarks and hadronically-bound J/11, by the observation of monoenergetic baryons in these decays. Submitted to Physics Letters B *Work supported in part by the Department of Energy under contract number DE-AC03-76SF00515 and FAPESP and CNPQ.