Decays The SLD Collaboration

We present improved measurements of identied charged hadron production over a wide momentum range at SLD, using the Cherenkov Ring Imaging Detector to identify clean samples of charged pions, kaons and protons. In addition to studying avor-inclusive Z 0 decays, we compare the production in light, c and b avor events, and present a new comparison of light-quark and gluon jets, selected using the SLD vertex detector. Also, we update our comparison of hadron and antihadron production in light quark (rather than antiquark) jets, selected using the high SLC electron beam polarization. Dierences between hadron and antihadron production at high momen-tum fraction provide precise measurements of leading particle production and new, stringent tests of fragmentation models