We present a study of the decays B^{0,+} --> J/psi pi^+ pi^- pi^0 K^{0,+}, using 467 10^6 BBbar pairs recorded with the BABAR detector. We present evidence for the decay mode X(3872) --> J/psi omega, with product branching fractions B(B^+ --> X(3872)K^+) B(X(3872) --> J/psi omega) =[0.6\pm0.2\stat \pm 0.1\syst ] 10^{-5}, and B(B^0 --> X(3872)K^0) B(X(3872) --> J/psi omega) =[0.6\pm0.3\stat \pm 0.1\syst ] 10^{-5}. A detailed study of the pi^+ pi^- pi^0 mass distribution from X(3872) decay favors a negative-parity assignment.
Evidence for the decay X(3872)-->J/psi omega / P. del Amo Sanchez, J.P. Lees, V. Poireau, E. Prencipe, V. Tisserand, J. Garra Tico, E. Grauges, M. Martinelli, A. Palano, M. Pappagallo, G. Eigen, B. Stugu, L. Sun, G.S. Abramsp, M. Battaglia, D.N. Brown, R.N. Cahn, R.G. Jacobsen, L.T. Kerth, Y.U.G. Kolomensky, G. Lynch, I.L. Osipenkov, M.T. Ronan, K. Tackmann, T. Tanabe, C.M. Hawkes, N. Soni, A.T. Watson, H. Koch, T. Schroeder, D. Walker, D.J. Asgeirsson, B.G. Fulsom, C. Hearty, T.S. Mattison, J.A. Mckenna, M. Barrett, A. Khan, V.E. Blinov, A.D. Bukin, A.R. Buzykaev, V.P. Druzhinin, V.B. Golubev, A.P. Onuchin, S.I. Serednyakov, Y.U.I. Skovpen, E.P. Solodov, K.Y.U. Todyshev, M. Bondioli, S. Curry, I. Eschrich, D. Kirkby, A.J. Lankford, P. Lund, M. Mandelkern, E.C. Martin, D.P. Stoker, S. Abachi, C. Buchanan, J.W. Gary, F. Liu, O. Long, B.C. Shen, G.M. Vitug, Z. Yasin, L. Zhang, V. Sharma, C. Campagnari, T.M. Hong, D. Kovalskyi, M.A. Mazur, J.D. Richman, T.W. Beck, A.M. Eisner, C.J. 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Evidence for the decay X(3872)-->J/psi omega
P. Biassoni;A. Lazzaro;F. Palombo;S. Stracka;N. Neri;
2010
Abstract
We present a study of the decays B^{0,+} --> J/psi pi^+ pi^- pi^0 K^{0,+}, using 467 10^6 BBbar pairs recorded with the BABAR detector. We present evidence for the decay mode X(3872) --> J/psi omega, with product branching fractions B(B^+ --> X(3872)K^+) B(X(3872) --> J/psi omega) =[0.6\pm0.2\stat \pm 0.1\syst ] 10^{-5}, and B(B^0 --> X(3872)K^0) B(X(3872) --> J/psi omega) =[0.6\pm0.3\stat \pm 0.1\syst ] 10^{-5}. A detailed study of the pi^+ pi^- pi^0 mass distribution from X(3872) decay favors a negative-parity assignment.Pubblicazioni consigliate
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