Published July 22, 2011
| Version v1
Journal article
Observation of the Decay B-→Ds(*)+K-l-νl
Creators
- Amo Sanchez, P. del1
- Lees, J. P.1
- Poireau, V.1
- Prencipe, E.1
- Tisserand, V.1
- Garra Tico, J.2
- Grauges, E.2
- Martinelli, M.3, 4
- Palano, A.3, 4
- Pappagallo, M.3, 4
- Eigen, G.5
- Stugu, B.5
- Sun, L.5
- Battaglia, M.6
- Brown, D. N.6
- Hooberman, B.6
- Kerth, L. T.6
- Kolomensky, Yu. G.6
- Lynch, G.6
- Osipenkov, I. L.6
- and others
- BABAR Collaboration
- 1. Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), Universite de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux (France)
- 2. Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona (Spain)
- 3. Dipartimento di Fisica, Universita di Bari, I-70126 Bari (Italy)
- 4. INFN Sezione di Bari, I-70126 Bari (Italy)
- 5. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
- 6. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)
Description
We report the observation of the decay B-→Ds(*)+K-l-νl based on 342 fb-1 of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e+e- storage rings at SLAC. A simultaneous fit to three Ds+ decay chains is performed to extract the signal yield from measurements of the squared missing mass in the B meson decay. We observe the decay B-→Ds(*)+K-l-νl with a significance greater than 5 standard deviations (including systematic uncertainties) and measure its branching fraction to be B(B-→Ds(*)+K-l-νl)=[6.13-1.03+1.04(stat)±0.43(syst)±0.51(B(Ds))]x10-4, where the last error reflects the limited knowledge of the Ds branching fractions.
Additional details
Identifiers
- DOI
- 10.1103/PhysRevLett.107.041804;
- arXiv
- arXiv:1012.4158v3;
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 107
- Journal Issue
- 4
- Journal Page Range
- p. 041804-041804.8
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 43083594
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- B MESONS; BRANCHING RATIO; D S MESONS; KAONS MINUS; MISSING MASS; PARTICLE DECAY; PARTICLE PRODUCTION; STANFORD LINEAR ACCELERATOR CENTER; STORAGE RINGS
- Descriptors DEC
- BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; CHARM PARTICLES; CHARMED MESONS; DECAY; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; HADRONS; KAONS; MASS; MESONS; NATIONAL ORGANIZATIONS; PSEUDOSCALAR MESONS; STRANGE MESONS; STRANGE PARTICLES; US DOE; US ERDA; US ORGANIZATIONS
Optional Information
- Notes
- (c) 2011 American Institute of Physics
- Collaborations
- BABAR Collaboration