Improved measurement of CP violation in neutral B decays to cc[over]s

Improved measurement of CP violation in neutral B decays to cc[over]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)x10(6) Upsilon(4S)-->BB[over] decays collected with the BABAR detector at the PEP-II B f...

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Veröffentlicht in:Physical review letters 2007-10, Vol.99 (17), p.171803-171803
Hauptverfasser: 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
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Sprache:eng
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Zusammenfassung: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)x10(6) Upsilon(4S)-->BB[over] 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
DOI:10.1103/PhysRevLett.99.171803