We have observed the decays B° -» K*(892)°j and B~ -> K*(892)~ry, which are evidence for the quark-level process b -• 57. The average branching fraction is (4.5 ± 1.5 ± 0.9) x 10~5. This value is consistent with standard model predictions from electromagnetic penguin diagrams. PACS numbers: 13.40.Hq, 14.40.Jz One-loop, flavor-changing neutral current diagrams, meson decays [1]. They were later identified as a possible known as penguins, were originally introduced into the source of direct CP violation in kaon decay, and hence as theory of weak decays to explain the AI = \ rule in K a contribution to e! /e [2]. Their importance in B meson 674 0031 -9007/93/71 (5)/674(5)$06.00

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Measurements of the e + e~ cross section above BB threshold are reported. Structures are observed which could be the Y(5S) and Y(6S) resonances. The masses and widths are given and compared with various potential-model predictions. Average charged multiplicities and inclusive lepton yields are also presented.

A measurement of the cross section for pp -+ pp is performed at two-photon center-of-mass energies between 2.00 and 3.25 GeV. These results are obtained using e+e~e+e pP events selected from 1.31 fb of data taken with the CLEO II detector. The measured cross section *Permanent address: Carleton University, Ottawa, Canada K1S 586.