Measurement of the Branching Fractions of B{yields}D**l{sup -}{nu}{sub l} Decays in Events Tagged by a Fully Reconstructed B Meson
Journal Article
·
· Physical Review Letters
- Laboratoire de Physique des Particules, IN2P3/CNRS et Universite de Savoie, F-74941 Annecy-Le-Vieux (France)
- Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona (Spain)
- INFN Sezione di Bari, Dipartmento di Fisica, I-70126 Bari (Italy)
- University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
- Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)
We report a measurement of the branching fractions of B{yields}D**l{sup -}{nu}{sub l} decays based on 417 fb{sup -1} of data collected at the {upsilon}(4S) resonance with the BABAR detector at the PEP-II e{sup +}e{sup -} storage rings. Events are selected by fully reconstructing one of the B mesons in a hadronic decay mode. A fit to the invariant mass differences m(D{sup (*)}{pi})-m(D{sup (*)}) is performed to extract the signal yields of the different D** states. We observe the B{yields}D**l{sup -}{nu}{sub l} decay modes corresponding to the four D** states predicted by heavy quark symmetry with a significance greater than 5 standard deviations including systematic uncertainties.
- OSTI ID:
- 21180075
- Journal Information:
- Physical Review Letters, Vol. 101, Issue 26; Other Information: DOI: 10.1103/PhysRevLett.101.261802; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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