A study of the two-body decays B^{±}→X_{cc[over ¯]}K^{±}, where X_{cc[over ¯]} refers to one charmonium state, is reported by the BABAR Collaboration using a data sample of 424 fb^{-1}. The absolute determination of branching fractions for these decays are significantly improved compared to previous BABAR measurements. Evidence is found for the decay B^{+}→X(3872)K^{+} at the 3σ level. The absolute branching fraction B[B^{+}→X(3872)K^{+}]=[2.1±0.6(stat)±0.3(syst)]×10^{-4} is measured for the first time. It follows that B[X(3872)→J/ψπ^{+}π^{-}]=(4.1±1.3)%, supporting the hypothesis of a molecular component for this resonance.
Measurements of the Absolute Branching Fractions of B-+/- -> K(+/-)Xc(c)over-bar / J.P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D.N. Brown, Y.G. Kolomensky, M. Fritsch, H. Koch, T. Schroeder, R. Cheaib, C. Hearty, T.S. Mattison, J.A. Mckenna, R.Y. So, V.E. Blinov, A.R. Buzykaev, V.P. Druzhinin, V.B. Golubev, E.A. Kozyrev, E.A. Kravchenko, A.P. Onuchin, S.I. Serednyakov, Y.I. Skovpen, E.P. Solodov, K.Y. Todyshev, A.J. Lankford, B. Dey, J.W. Gary, O. Long, A.M. Eisner, W.S. Lockman, W. Panduro Vazquez, D.S. Chao, C.H. Cheng, B. Echenard, K.T. Flood, D.G. Hitlin, J. Kim, Y. Li, T.S. Miyashita, P. Ongmongkolkul, F.C. Porter, M. Röhrken, Z. Huard, B.T. Meadows, B.G. Pushpawela, M.D. Sokoloff, L. Sun, J.G. Smith, S.R. Wagner, D. Bernard, M. Verderi, D. Bettoni, C. Bozzi, R. Calabrese, G. Cibinetto, E. Fioravanti, I. Garzia, E. Luppi, V. Santoro, A. Calcaterra, R. de Sangro, G. Finocchiaro, S. Martellotti, P. Patteri, I.M. Peruzzi, M. Piccolo, M. Rotondo, A. Zallo, S. Passaggio, C. Patrignani, B.J. Shuve, H.M. Lacker, B. Bhuyan, U. Mallik, C. Chen, J. Cochran, S. Prell, A.V. Gritsan, N. Arnaud, M. Davier, F. Le Diberder, A.M. Lutz, G. Wormser, D.J. Lange, D.M. Wright, J.P. Coleman, E. Gabathuler, D.E. Hutchcroft, D.J. Payne, C. Touramanis, A.J. Bevan, F. Di Lodovico, R. Sacco, G. Cowan, S. Banerjee, D.N. Brown, C.L. Davis, A.G. Denig, W. Gradl, K. Griessinger, A. Hafner, K.R. Schubert, R.J. Barlow, G.D. Lafferty, R. Cenci, A. Jawahery, D.A. Roberts, R. Cowan, S.H. Robertson, R.M. Seddon, N. Neri, F. Palombo, L. Cremaldi, R. Godang, D.J. Summers, P. Taras, G. De Nardo, C. Sciacca, G. Raven, C.P. Jessop, J.M. Losecco, K. Honscheid, R. Kass, A. Gaz, M. Margoni, M. Posocco, G. Simi, F. Simonetto, R. Stroili, S. Akar, E. Ben-Haim, M. Bomben, G.R. Bonneaud, G. Calderini, J. Chauveau, G. Marchiori, J. Ocariz, M. Biasini, E. Manoni, A. Rossi, G. Batignani, S. Bettarini, M. Carpinelli, G. Casarosa, M. Chrzaszcz, F. Forti, M.A. Giorgi, A. Lusiani, B. Oberhof, E. Paoloni, M. Rama, G. Rizzo, J.J. Walsh, L. Zani, A.J.S. Smith, F. Anulli, R. Faccini, F. Ferrarotto, F. Ferroni, A. Pilloni, G. Piredda, C. Bünger, S. Dittrich, O. Grünberg, M. Heß, T. Leddig, C. Voß, R. Waldi, T. Adye, F.F. Wilson, S. Emery, G. Vasseur, D. Aston, C. Cartaro, M.R. Convery, J. Dorfan, W. Dunwoodie, M. Ebert, R.C. Field, B.G. Fulsom, M.T. Graham, C. Hast, W.R. Innes, P. Kim, D.W.G.S. Leith, S. Luitz, D.B. Macfarlane, D.R. Muller, H. Neal, B.N. Ratcliff, A. Roodman, M.K. Sullivan, J. Va'Vra, W.J. Wisniewski, M.V. Purohit, J.R. Wilson, A. Randle-Conde, S.J. Sekula, H. Ahmed, M. Bellis, P.R. Burchat, E.M.T. Puccio, M.S. Alam, J.A. Ernst, R. Gorodeisky, N. Guttman, D.R. Peimer, A. Soffer, S.M. Spanier, J.L. Ritchie, R.F. Schwitters, J.M. Izen, X.C. Lou, F. Bianchi, F. De Mori, A. Filippi, D. Gamba, L. Lanceri, L. Vitale, F. Martinez-Vidal, A. Oyanguren, J. Albert, A. Beaulieu, F.U. Bernlochner, G.J. King, R. Kowalewski, T. Lueck, I.M. Nugent, J.M. Roney, R.J. Sobie, N. Tasneem, T.J. Gershon, P.F. Harrison, T.E. Latham, R. Prepost, S.L. Wu. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 124:15(2020 Apr 17). [10.1103/PhysRevLett.124.152001]
Measurements of the Absolute Branching Fractions of B-+/- -> K(+/-)Xc(c)over-bar
N. Neri;F. Palombo;
2020
Abstract
A study of the two-body decays B^{±}→X_{cc[over ¯]}K^{±}, where X_{cc[over ¯]} refers to one charmonium state, is reported by the BABAR Collaboration using a data sample of 424 fb^{-1}. The absolute determination of branching fractions for these decays are significantly improved compared to previous BABAR measurements. Evidence is found for the decay B^{+}→X(3872)K^{+} at the 3σ level. The absolute branching fraction B[B^{+}→X(3872)K^{+}]=[2.1±0.6(stat)±0.3(syst)]×10^{-4} is measured for the first time. It follows that B[X(3872)→J/ψπ^{+}π^{-}]=(4.1±1.3)%, supporting the hypothesis of a molecular component for this resonance.
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