Observation of the rare decay B0→KS0K±π

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doi:10.1103/PhysRevD.82.031101

We report an analysis of charmless hadronic decays of neutral B mesons to the final state KS0K±π, using a data sample of (465±5)×106 BB̄ events collected with the BABAR detector at the Υ(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 B(B0→KS0K±π)=(3. 2±0.5±0.3)×10-6, where the uncertainties are statistical and systematic, respectively.

Sanchez, P., Lees, J., Poireau, V., Prencipe, E., Tisserand, V., Tico, J., et al. (2010). Observation of the rare decay B0→KS0K±π. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82(3) [10.1103/PhysRevD.82.031101].