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  • Observation of the Semilept...
    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.; Pappagallo, M.; Eigen, G.; Stugu, B.; Sun, L.; S. Abrams, G.; Battaglia, M.; N. Brown, D.; Button-Shafer, J.; N. Cahn, R.; Groysman, Y.; G. Jacobsen, R.; A. Kadyk, J.; T. Kerth, L.; G. Kolomensky, Yu; Kukartsev, G.; Lopes Pegna, D.; Lynch, G.; M. Mir, L.; J. Orimoto, T.; L. Osipenkov, I.; T. Ronan, M.; K. Tackmann, _; Tanabe, T.; Wenzel, W.A.; del Amo Sanchez, P.; M. Hawkes, C.; T. Watson, A.; Koch, H.; Schroeder, T.; Walker, D.; J. Asgeirsson, D.; Cuhadar-Donszelmann, T.; G. Fulsom, B.; Hearty, C.; S. Mattison, T.; A. Mckenna, J.; Barrett, M.; Khan, A.; Saleem, M.; Teodorescu, L.; E. Blinov, V.; D. Bukin, A.; P. Druzhinin, V.; B. Golubev, V.; P. Onuchin, A.; I. Serednyakov, S.; I. Skovpen, Yu; P. Solodov, E.; Yu. Todyshev, K.; Bondioli, M.; Curry, S.; Eschrich, I.; Kirkby, D.; J. Lankford, A.; Lund, P.; Mandelkern, M.; C. Martin, E.; P. Stoker, D.; Abachi, S.; Buchanan, C.; W. Gary, J.; Liu, F.; Long, O.; C. Shen, B.; G. M. Vitug, _; Zhang, L.; P. Paar, H.; Rahatlou, S.; Sharma, V.; W. Berryhill, J.; Campagnari, C.; Cunha, A.; Dahmes, B.; M. Hong, T.; Kovalskyi, D.; D. Richman, J.; W. Beck, T.; M. Eisner, A.; J. Flacco, C.; Heusch, C.A.; Kroseberg, J.; S. Lockman, W.; Schalk, T.; A. Schumm, B.; Seiden, A.; G. Wilson, M.; O. Winstrom, L.

    Physical review letters, 2008, Letnik: 100
    Journal Article

    We present measurements of the semileptonic decays B- --> D0 tau- nubar, B- --> D*0 tau- nubar, B0bar --> D+ tau- nubar, and B0bar --> D*+ tau- nubar, which are potentially sensitive to non--Standard Model amplitudes. The data sample comprises 232x10^6 Upsilon(4S) --> BBbar decays collected with the BaBar detector. From a combined fit to B- and B0bar channels, we obtain the branching fractions B(B --> D tau- nubar) = (0.86 +/- 0.24 +/- 0.11 +/- 0.06)% and B(B --> D* tau- nubar) = (1.62 +/- 0.31 +/- 0.10 +/- 0.05)% (normalized for the B0bar), where the uncertainties are statistical, systematic, and normalization-mode-related.