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With a sample of 232x10^6 Upsilon(4S)->BBbar events collected with the BaBardetector, we study the decays of B mesons to ppbarh final states, whereh=pi+,Ks,K*0 or K*+. We report evidence for the B->ppbarK*0 decay, with abranching fraction (1.5+/-0.5(stat)+/-0.4(syst))x10^-6, and for theB+->eta_cK*+ decay, with the branching fraction ofBr(B+->eta_cK*+)xBr(eta_c->ppbar)=(1.57^{+0.56}_{-0.45}(stat)^{+0.46}_{-0.36}(syst))x10^-6,and provide improved measurements of the branching fractions of the other modesof this type. We also report the measurements of the charge asymmetryconsistent with zero in the B+->ppbarpi+, B0->ppbarK*0 and B+->ppbarK*+ modes.No evidence is found for the pentaquark candidate Theta+ in the mass range 1.52to 1.55 GeV/c^2, decaying into pKs, or the glueball candidate fJ(2220) in themass range 2.2<mppbar<2.4GeV/c^2, and branching fraction limits are establishedfor both at the 10^-7 level.

Evidence for the B0->ppbarK*0 and B+->eta_cK*+ decays and Study of the Decay Dynamics of B Meson Decays into ppbarh Final States

Evidence for the B0->ppbarK0 and B+->eta_cK+ decays and Study of the Decay Dynamics of B Meson Decays into ppbarh Final States