Preliminary measurements of production of π±, K±, p, K0 and Λ0 in hadronic Z0 decays

We have measured production of π±, Κ±, p/bar p, Κ0 and Λ0/bar Λ0 as a function of momentum in inclusive hadronic Z0 decay events and separately in events containing primary light-(uds) and b-quarks. The SLD Cherenkov Ring Imaging Detector was used to identify charged pions, kaons, and protons over most of the available momentum range 0.8<p<33 GeV/c. The neutral Κ0s and Λ0 were reconstructed using the π+π- and pπ- decay modes, respectively. We present the first comparisons of momentum of charged tracks measured in the SLD Vertex Detector. Substantial differences are observed, consistent with the kinematics of B-hadron production in Z0 decays and the properties of B-hadron decays as measured at lower energies