Ratios of bottom meson branching fractions involving J/ psi mesons and determination of b quark fragmentation fractions.
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We report a measurement of the ratios of the decay rates of the B+, B0, and B0s mesons into exclusive final states containing a J/ meson. The final states were selected from 19.6 pb-1 of pp collisions recorded by the Collider Detector at Fermilab. These data are interpreted to determine the b quark fragmentation fractions fu, fd, and fs. We also determine the branching fractions for the decay modes (formula presented). We discuss the implications of these measurements to B meson decay models. 1996 The American Physical Society.