Improved Measurement of CP Violation in Neutral B Decays to $c\bar{c}s

We present updated measurements of time-dependent CP asymmetries in fully-reconstructed neutral B decays to several CP eigenstates containing a charmonium meson. The measurements use a data sample of (383 +/- 4) x 10^6 Y(4S)-> BBbar decays collected with the BABAR detector at the PEP-II B factory...

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Bibliographic Details
Published in:Physical review letters 2007, Vol.99
Main Authors: Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J.P., Poireau, V., Prudent, X., Tisserand, V., Zghiche, A., Garra Tico, J., Grauges, E., Lopez, L., Palano, A., Eigen, G., Ofte, I., Stugu, B., Sun, L., Abrams, G.S., Battaglia, M., Brown, D.N., Button-Shafer, J., Cahn, R.N., Groysman, Y., Jacobsen, R.G., Kadyk, J.A., Kerth, L.T., Kolomensky, Yu. G., Kukartsev, G., Lopes Pegna, D., Lynch, G., Mir, L.M., Orimoto, T.J., Pripstein, M., Roe, N.A., Ronan, M.T., Tackmann, K., Wenzel, W.A., del Amo Sanchez, P., Hawkes, C.M., Watson, A.T., Held, T., Koch, H., Lewandowski, B., Pelizaeus, M., Schroeder, T., Steinke, M., Cottingham, W.N., Walker, D., Asgeirsson, D.J., Cuhadar-Donszelmann, T., Fulsom, B.G., Hearty, C., Knecht, N.S., Mattison, T.S., Mckenna, J.A., Khan, A., Saleem, M., Teodorescu, L., Blinov, V.E., Bukin, A.D., Druzhinin, V.P., Golubev, V.B., Onuchin, A.P., Serednyakov, S.I., Skovpen, Yu. I., Solodov, E.P., Todyshev, K. Yu, Bondioli, M., Curry, S., Eschrich, I., Kirkby, D., Lankford, A.J., Lund, P., Mandelkern, M., Martin, E.C., Stoker, D.P., Abachi, S., Buchanan, C., Foulkes, S.D., Gary, J.W., Liu, F., Long, O., Shen, B.C., Zhang, L., Paar, H.P., Rahatlou, S., Sharma, V., Berryhill, J.W., Campagnari, C., Cunha, A., Dahmes, B., Hong, T.M., Kovalskyi, D., Richman, J.D., Beck, T.W., Eisner, A.M., Flacco, C.J., Heusch, C.A., Kroseberg, J., Lockman, W.S.
Format: Article
Language:English
Subjects:
High Energy Physics - Experiment
Physics
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Summary:We present updated measurements of time-dependent CP asymmetries in fully-reconstructed neutral B decays to several CP eigenstates containing a charmonium meson. The measurements use a data sample of (383 +/- 4) x 10^6 Y(4S)-> BBbar decays collected with the BABAR detector at the PEP-II B factory. We determine sin2beta = 0.714 +/- 0.032 (stat) +/- 0.018 (syst) and |lambda| = 0.952 +/- 0.022 (stat) +/- 0.017 (syst).
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.99.171803