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Observation of the rare decay B0→KS0K±π

  • Author(s): Del Amo Sanchez, P;
  • Lees, JP;
  • Poireau, V;
  • Prencipe, E;
  • Tisserand, V;
  • Garra Tico, J;
  • Grauges, E;
  • Martinelli, M;
  • Palano, A;
  • Pappagallo, M;
  • Eigen, G;
  • Stugu, B;
  • Sun, L;
  • Battaglia, M;
  • Brown, DN;
  • Hooberman, B;
  • Kerth, LT;
  • Kolomensky, YG;
  • Lynch, G;
  • Osipenkov, IL;
  • Tanabe, T;
  • Hawkes, CM;
  • Soni, N;
  • Watson, AT;
  • Koch, H;
  • Schroeder, T;
  • Asgeirsson, DJ;
  • Hearty, C;
  • Mattison, TS;
  • McKenna, JA;
  • Khan, A;
  • Randle-Conde, A;
  • Blinov, VE;
  • Buzykaev, AR;
  • Druzhinin, VP;
  • Golubev, VB;
  • Onuchin, AP;
  • Serednyakov, SI;
  • Skovpen, YI;
  • Solodov, EP;
  • Todyshev, KY;
  • Yushkov, AN;
  • Bondioli, M;
  • Curry, S;
  • Kirkby, D;
  • Lankford, AJ;
  • Mandelkern, M;
  • Martin, EC;
  • Stoker, DP;
  • Atmacan, H;
  • Gary, JW;
  • Liu, F;
  • Long, O;
  • Vitug, GM;
  • Yasin, Z;
  • Sharma, V;
  • Campagnari, C;
  • Hong, TM;
  • Kovalskyi, D;
  • Richman, JD;
  • Eisner, AM;
  • Heusch, CA;
  • Kroseberg, J;
  • Lockman, WS;
  • Martinez, AJ;
  • Schalk, T;
  • Schumm, BA;
  • Seiden, A;
  • Winstrom, LO;
  • Cheng, CH;
  • Doll, DA;
  • Echenard, B;
  • Hitlin, DG;
  • Ongmongkolkul, P;
  • Porter, FC;
  • Rakitin, AY;
  • Andreassen, R;
  • Dubrovin, MS;
  • Mancinelli, G;
  • Meadows, BT;
  • Sokoloff, MD;
  • Bloom, PC;
  • Ford, WT;
  • Gaz, A;
  • Hirschauer, JF;
  • Nagel, M;
  • Nauenberg, U;
  • Smith, JG;
  • Wagner, SR;
  • Ayad, R;
  • Toki, WH;
  • Hauke, A;
  • Jasper, H;
  • Karbach, TM;
  • Merkel, J;
  • Petzold, A;
  • Spaan, B;
  • Wacker, K;
  • Kobel, MJ;
  • Schubert, KR
  • et al.
Abstract

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. © 2010 The American Physical Society.

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