PT Journal AU BABAR Collaboration (del Amo Sanchez, Pea Azzolini, V Lopez-March, N Martinez-Vidal, F Milanes, DA Oyanguren, A TI Observation of the rare decay B-0 -> K-S(0) K-+/-pi(-/+) SO Physical Review D JI Phys. Rev. D PY 2010 BP 031101 EP 8pp VL 82 IS 3 DI 10.1103/PhysRevD.82.031101 LA English AB We report an analysis of charmless hadronic decays of neutral B mesons to the final state (KSK +/-)-K-0 pi(-/+) (sic), using a data sample of (465 +/- 5) x 10(6) B (B) over bar events collected with the BABAR detector at the Gamma(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 -> (KSK +/-)-K-0 pi(-/+) (sic) (3.2 +/- 0.5 +/- 0.3) x 10(-6), where the uncertainties are statistical and systematic, respectively. ER