Observation of the Rare Decay B0 --> KsK+/-pi-/+

Details Observation of the Rare Decay B0 --> KsK+/-pi-/+ Observation of the Rare Decay B0 --> KsK+/-pi-/+

2010-03-02

arxiv.org/abs/1003.0640v2

Phys. Rev. D 82, 031101(R) (2010)

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 5 postscript figures, published in PRD(RC)

Scientific paper

10.1103/PhysRevD.82.031101

We report an analysis of charmless hadronic decays of neutral B mesons to the final state KsK+/-pi-/+, using a data sample of (465 +/- 5) x 10^6 BB-bar events collected with the BABAR detector at the Y(4S) resonance. We observe an excess of signal events with a significance of 5.2 standard deviations including systematic uncertainties and measure the branching fraction to be BF(B0 --> KsK+/-pi-/+) = (3.2 +/- 0.5 +/- 0.3) x 10^-6, where the uncertainties are statistical and systematic, respectively.

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