Abstract
We present single photon annihilation results from the MARK II detector at PEP based on approx. 100 pb/sup -1/ of integrated luminosity taken at a center of mass energy ..sqrt..s = 29 GeV. A study of inclusive leptons for momenta greater than or equal to 2 GeV/c yield the average semileptonic branching ratios of bottom (b) and charm (c) quarks and information about the b fragmentation function. A measurement of the bottom hadron lifetime is presented based on a study of the prompt lepton impact parameters. In addition we report on a precise measurement of the tau lifetime and an updated D/sup 0/ lifetime. We also present a search for supersymmetric electrons, weak neutral current couplings from leptons and bottom particles and evidence for K*'s at PEP. 43 references.
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