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 · Wed Dec 31 04:00:00 EST 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.261802· OSTI ID:21180075

Aubert, B; Bona, M; Karyotakis, Y; Lees, J P; Poireau, V; Prencipe, E; Prudent, X; Tisserand, V ^[1]; Tico, J Garra; Grauges, E ^[2]; Lopez, L; Palano, A; Pappagallo, M ^[3]; Eigen, G; Stugu, B; Sun, L; Kerth, L T ^[4]; Abrams, G S; Battaglia, M; Brown, D N ^[5]

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1. Laboratoire de Physique des Particules, IN2P3/CNRS et Universite de Savoie, F-74941 Annecy-Le-Vieux (France)
2. Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona (Spain)
3. INFN Sezione di Bari, Dipartmento di Fisica, I-70126 Bari (Italy)
4. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
5. 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, Journal Name: Physical Review Letters Journal Issue: 26 Vol. 101; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
B QUARKS
BRANCHING RATIO
C QUARKS
HADRONIC PARTICLE DECAY
MASS DIFFERENCE
RESONANCE
STORAGE RINGS
SYMMETRY
T QUARKS