| Abstract |
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We present measurements of branching fractions in the b -> s s-bar s
penguin-dominated decays B+ --> phi K+ and B0 --> phi K0 in a sample of
approximately 89 million BBbar pairs collected by the BaBar detector at
the PEP-II asymmetric-energy B-meson factory at SLAC. We determine
B(B+ --> phi K+) = (10.0 +0.9 -0.8 +/- 0.5) x 10^{-6} and
B(B0 --> phi K0) = (8.4 +1.5 -1.3 +/- 0.5) x 10^{-6}. Additionally,
we measure the CP-violating charge asymmetry ACP (B+/- --> phi K+/-)
= 0.04 +/- 0.09 +/- 0.01, with a 90% confidence interval of [-0.10, 0.18],
and set an upper limit B(B+ --> phi pi+) < 0.41 x 10^{-6} (at the 90%
confidence level).
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