We search for b --> smu+ mu- transitions in B meson (B+,
B0, or B0(s)) decays with 924 pb-1 of p anti-p collisions at s**(1/2)
ñ.96 TeV collected with the CDF II detector at the Fermilab Tevatron.
We find excesses with significances of 4.5, 2.9, and 2.4 standard
deviations in the B+ --> mu+ mu- K+, B0 --> mu+ mu- K*(892)0,
and B0(s) --> mu+ mu- phi decay modes, respectively. Using B -->
J/psi h (h ÿ+, K*(892)0, and B0(s) --> mu+ mu- phi decay modes,
we report branching fractions for the previously observed B+ and B0
decays, B(B+ --> mu+ mu- K+) ÿ0.59 +/- 0.15 +/- 0.04) x 10-6, and
B(B0 --> mu+ mu-K*(892)0) ÿ0.81 +/- 0.30 +/- 0.10) x 10-6, where
the first uncertainty is statistical, and the second is systematic.
These measurements are consistent with the world average results, and are
competitive with the best available measurements. We set an upper limit
on the relative branching fraction B(B0(s) --> mu+ muÿphi)/(B(B0(s)
--> J/phi phi) < 2.6(2.3) x 10-3 at the 95(90)% confidence level,
which is the most stringent to date.
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Updated: Wednesday, 2009 January 28 11:52:46 CST automatically from input from carol picciolo