Measurements of the Absolute Branching Fractions of $B^\pm \to K^\pm X_{c\bar c}

• Published in: Physical review letters 2006, Vol.96
• Main Authors: Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J.P., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Pappagallo, M., Pompili, A., Chen, J.C., Qi, N.D., Rong, G., Wang, P., Zhu, Y.S., Eigen, G., Ofte, I., Stugu, B., Abrams, G.S., Battaglia, M., Breon, A.B., Brown, D.N., Button-Shafer, J., Cahn, R.N., Charles, E., Day, C.T., Gill, M.S., Gritsan, A.V., Groysman, Y., Jacobsen, R.G., Kadel, R.W., Kadyk, J., Kerth, L.T., Kolomensky, Yu. G., Kukartsev, G., Lynch, G., Mir, L.M., Oddone, P.J., Orimoto, T.J., Pripstein, M., Roe, N.A., Ronan, M.T., Wenzel, W.A., Barrett, M., Ford, K.E., Harrison, T.J., Hart, A.J., Hawkes, C.M., Morgan, S.E., Watson, A.T., Fritsch, M., Goetzen, K., Held, T., Koch, H., Lewandowski, B., Pelizaeus, M., Peters, K., Schroeder, T., Steinke, M., Boyd, J.T., Burke, J.P., Chevalier, N., Cottingham, W.N., Cuhadar-Donszelmann, T., Fulsom, B.G., Hearty, C., Knecht, N.S., Mattison, T.S., Mckenna, J.A., Khan, A., Kyberd, P., Saleem, M., Teodorescu, L., Blinov, A.E., Blinov, V.E., Bukin, A.D., Druzhinin, V.P., Golubev, V.B., Kravchenko, E.A., Onuchin, A.P., Serednyakov, S.I., Skovpen, Yu. I., Solodov, E.P., Yushkov, A.N., Best, D., Bondioli, M., Bruinsma, M., Chao, M., Curry, S., Eschrich, I., Kirkby, D., Lankford, A.J., Lund, P., Mandelkern, M., Mommsen, R.K., Roethel, W., Stoker, D.P.
• Format: Article
• Language: English
• Subjects: High Energy Physics - Experiment; Physics
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.96.052002

We study the two-body decays of B^\pm mesons to K^\pm and a charmonium state, X_{c\bar c}, in a sample of 210.5 fb^{-1} of data from the BaBar experiment. We perform measurements of absolute branching fractions BR(B^\pm --> K^\pm X_{c\bar c}) using a missing mass technique, and report several new or improved results. In particular, the upper limit BR(B^\pm --> K^\pm X(3872)) J/\psi\pi^+\pi^-)>4.2% will help in understanding the nature of the recently discovered X(3872).