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ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2008, vol. 100, p. -

Measurement of the branching fractions of exclusive B̄→D(*) (π)l-ν̄l decays in events with a fully reconstructed B meson

Aubert B., Bona M., 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., Abrams G. S., Battaglia M., Brown D. N., Button-Shafer J., Cahn R. N., Jacobsen R. G., Kadyk J. A., Kerth L. T., Kolomensky Yu G., Kukartsev G., Lynch G., Osipenkov I. L., Ronan M. T., Tackmann K., Tanabe T., Wenzel W. A., Del Amo Sanchez P., Hawkes C. M., Soni N., Watson A. T., Koch H., Schroeder T., Walker D., Asgeirsson D. J., Cuhadar-Donszelmann T., Fulsom B. G., Hearty C., Mattison T. S., McKenna J. A., Barrett M., Khan A., Saleem M., Teodorescu L., Blinov V. E., Bukin A. D., Buzykaev A. R., 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., Gary J. W., Liu F., Long O., Shen B. C., Vitug G. M., Yasin Z., Zhang L., Paar H. P., Rahatlou S., Sharma V., Campagnari C., 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., Schalk T., Schumm B. A., Seiden A., Wilson M. G., Winstrom L. O., Chen E., Cheng C. H., Doll D. A., Echenard B., Fang F.

We report a measurement of the branching fractions for B̄→ D(*)(π)-ν̄ decays based on 341.1fb-1 of data collected at the Υ(4S) resonance with the BABAR detector at the SLAC PEP-II e+e- storage rings. Events are tagged by fully reconstructing one of the B mesons in a hadronic decay mode. We obtain B(B-→D0-ν̄)=(2.33±0. 09stat±0.09syst)%, B(B-→D*0-ν̄)=(5.83±0. 15stat±0.30syst)%, B(B̄0→D+-ν̄)=(2.21±0. 11stat±0.12syst)%, B(B̄0→D*+-ν̄)=(5.49±0. 16stat±0.25syst)%, B(B-→D+π - ν̄)=(0.42±0. 06stat±0.03syst)%, B(B-→D*+π - ν̄)=(0.59±0. 05stat±0.04syst)%, B(B̄0→D0π+-ν̄)=(0.43±0. 08stat±0.03syst)%, and B(B̄0→D*0π+-ν̄)=(0. 48±0.08stat±0.04syst)%. © 2008 The American Physical Society.