$Measurements of CP-Violating Asymmetries in the Decay $B^0 \to K^+K^-K^0$

Measurements of CP-Violating Asymmetries in the Decay $B^0 \to K^+K^-K^0

We analyze the decay B0 --> K+ K- K0 using 383 million B-Bbar events collected by the BaBar detector at SLAC to extract CP violation parameter values over the Dalitz plot. Combining all K+ K- K0 events, we find A_CP = -0.015 +/- 0.077 +/- 0.053 and beta_eff = 0.352 +/- 0.076 +/- 0.026 rad, corres...

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Veröffentlicht in:	Physical review letters 2007, Vol.99
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.
Format:	Artikel
Sprache:	eng
Schlagworte:	High Energy Physics - Experiment Physics
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Zusammenfassung:	We analyze the decay B0 --> K+ K- K0 using 383 million B-Bbar events collected by the BaBar detector at SLAC to extract CP violation parameter values over the Dalitz plot. Combining all K+ K- K0 events, we find A_CP = -0.015 +/- 0.077 +/- 0.053 and beta_eff = 0.352 +/- 0.076 +/- 0.026 rad, corresponding to a CP violation significance of 4.8 sigma. A second solution near pi/2 - beta_eff is disfavored with a significance of 4.5 sigma. We also report A_CP and beta_eff separately for decays to phi(1020) K0, f0(980) K0, and K+ K- K0 with m_{K+ K-} > 1.1 GeV/c^2.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.99.161802