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Study of B-meson decays to ηcK(*), ηc(2S)K(*), and ηcγK(*)

  • Author(s): Aubert, B;
  • Bona, M;
  • Karyotakis, Y;
  • Lees, JP;
  • Poireau, V;
  • Prencipe, E;
  • Prudent, X;
  • Tisserand, V;
  • Tico, JG;
  • Grauges, E;
  • Lopez, L;
  • Palano, A;
  • Pappagallo, M;
  • Eigen, G;
  • Stugu, B;
  • Sun, L;
  • Abrams, GS;
  • Battaglia, M;
  • Brown, DN;
  • Button-Shafer, J;
  • Cahn, RN;
  • Jacobsen, RG;
  • Kadyk, JA;
  • Kerth, LT;
  • Kolomensky, YG;
  • Kukartsev, G;
  • Lynch, G;
  • Osipenkov, IL;
  • Ronan, MT;
  • Tackmann, K;
  • Tanabe, T;
  • Wenzel, WA;
  • Hawkes, CM;
  • Soni, N;
  • Watson, AT;
  • Koch, H;
  • Schroeder, T;
  • Walker, D;
  • Asgeirsson, DJ;
  • Cuhadar-Donszelmann, T;
  • Fulsom, BG;
  • Hearty, C;
  • Mattison, TS;
  • McKenna, JA;
  • Barrett, M;
  • Khan, A;
  • Saleem, M;
  • Teodorescu, L;
  • Blinov, VE;
  • Bukin, AD;
  • Buzykaev, AR;
  • Druzhinin, VP;
  • Golubev, VB;
  • Onuchin, AP;
  • Serednyakov, SI;
  • Skovpen, YI;
  • Solodov, EP;
  • Todyshev, KY;
  • Bondioli, M;
  • Curry, S;
  • Eschrich, I;
  • Kirkby, D;
  • Lankford, AJ;
  • Lund, P;
  • Mandelkern, M;
  • Martin, EC;
  • Stoker, DP;
  • Abachi, S;
  • Buchanan, C;
  • Gary, JW;
  • Liu, F;
  • Long, O;
  • Shen, BC;
  • Vitug, GM;
  • Yasin, Z;
  • Zhang, L;
  • Sharma, V;
  • Campagnari, C;
  • Hong, TM;
  • Kovalskyi, D;
  • Mazur, MA;
  • Richman, JD;
  • Beck, TW;
  • Eisner, AM;
  • Flacco, CJ;
  • Heusch, CA;
  • Kroseberg, J;
  • Lockman, WS;
  • Schalk, T;
  • Schumm, BA;
  • Seiden, A;
  • Wang, L;
  • Wilson, MG;
  • Winstrom, LO;
  • Cheng, CH;
  • Doll, DA;
  • Echenard, B;
  • Fang, F;
  • Hitlin, DG;
  • Narsky, I
  • et al.
Abstract

We study two-body B-meson decays to a charmonium state (ηc, ηc(2S) or hc) and a K+ or K*0(892) meson using a sample of 349fb-1 of data collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at the Stanford Linear Accelerator Center. We measure B(B0→ηcK*0)= (5.7±0.6(stat)±0.9(syst))×10-4, B(B0→ηc(2S) K*0)<3.9×10-4, B(B+→hcK+)×B(hc→ηcγ) <4.8×10-5 and B(B0→hcK*0)×B(hc→ηcγ) <2.2×10-4 at the 90% C.L., and B(ηc(2S)→KK̄π)=(1. 9±0.4(stat)±1.1(syst))%. We also measure the mass and width of the ηc meson to be m(ηc)=(2985.8±1.5(stat)±3.1(syst))MeV/c2 and Γ(ηc)=(36.3-3.6+3.7(stat)±4.4(syst))MeV. © 2008 The American Physical Society.

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