Measurements of branching fractions in and and search for direct CP violation in
Collaboration
6 pages
Published in:
- Phys.Rev.D 69 (2004) 011102
e-Print:
- hep-ex/0309025 [hep-ex]
Report number:
- SLAC-PUB-10086,
- BABAR-PUB-03-17,
- BABAR-PUB-03-017
Experiments:
View in:
Citations per year
Abstract:
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).- 11.30.Er
- 12.15.Hh
- 13.25.Hw
- electron positron: colliding beams
- electron positron: annihilation
- Upsilon(10570): electroproduction
- B: pair production
- Phi(1020)
- B+: branching ratio
- B0: branching ratio
References(18)
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