Observation of the rare decay B^0 → K_S^(0)K^(±)π^∓

Creators: del Amo Sanchez, P.; Cheng, C. H.; Doll, D. A.; Echenard, B.; Hitlin, D. G.; Ongmongkolkul, P.; Porter, F. C.; Rakitin, A. Y.; BaBar Collaboration

Abstract

We report an analysis of charmless hadronic decays of neutral B mesons to the final state K_(S)^(0)K^(±)π^∓, using a data sample of (465±5)×10^6 BB(overbar) 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(B^0 → K_(S)^(0)K^(±)π^∓)=(3.2±0.5±0.3)×10^(-6), where the uncertainties are statistical and systematic, respectively.

Additional Information

© 2010 American Physical Society. Received 2 March 2010; published 5 August 2010. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain), and STFC (United Kingdom). Individuals have received support from the Marie Curie EIF (European Union) and the A. P. Sloan Foundation.

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