Journal articles
Search for Bbar --> Lambda_c+ X l- nu Decays in Events With a Fully Reconstructed B Meson
J.P. Lees
1
V. Poireau
1
V. Tisserand
1
D. Bernard
2
M. Verderi
2
N. Arnaud
3
M. Davier
3
D. Derkach
3
G. Grosdidier
3
F. Le Diberder
3
A. M. Lutz
3
B. Malaescu
3
P. Roudeau
3
M. H. Schune
3
A. Stocchi
3
G. Wormser
3
1
LAPP - Laboratoire d'Annecy de Physique des Particules (9 Chemin de Bellevue - BP 110 - 74941 Annecy-le-Vieux CEDEX - France - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- USMB [Université de Savoie] [Université de Chambéry] - Université Savoie Mont Blanc (27, rue Marcoz - 73000 Chambéry - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5814 (France)
2
LLR - Laboratoire Leprince-Ringuet (Route de Saclay - 91128 Palaiseau Cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- X - École polytechnique (École polytechnique, 91128 Palaiseau Cedex - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7638 (France)
3
LAL - Laboratoire de l'Accélérateur Linéaire (Centre Scientifique d'Orsay B.P. 34 91898 ORSAY Cedex - France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR8607 (France)
Abstract : We present a search for semileptonic B decays to the charmed baryon Lambda_c+ based on 420 fb-1 of data collected at the Upsilon(4S) resonance with the BABAR detector at the PEP-II $e^+e^-$ storage rings. By fully reconstructing the recoiling B in a hadronic decay mode, we reduce non-B backgrounds and determine the flavor of the signal B. We statistically correct the flavor for the effect of the B0 mixing. We obtain a 90% confidence level upper limit of BF(Bbar --> Lambda_c+ X l- nubar)/BF(Bbar --> Lambda_c+ X) < 3.5 %.
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Journal articles
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http://hal.in2p3.fr/in2p3-00672860
Contributor : Sabine Starita <>
Submitted on : Wednesday, February 22, 2012 - 10:58:30 AM
Last modification on : Friday, November 6, 2020 - 3:30:35 AM
Contributor : Sabine Starita <>
Submitted on : Wednesday, February 22, 2012 - 10:58:30 AM
Last modification on : Friday, November 6, 2020 - 3:30:35 AM
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- HAL Id : in2p3-00672860, version 1
- DOI : 10.1103/PhysRevD.85.011102
- ARXIV : 1110.6005
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UNIV-SAVOIE | IN2P3 | LAL | LAPP | LLR | CNRS | X | X-LLR | X-DEP-PHYS | UGA
Citation
J.P. Lees, V. Poireau, V. Tisserand, D. Bernard, M. Verderi, et al.. Search for Bbar --> Lambda_c+ X l- nu Decays in Events With a Fully Reconstructed B Meson. Physical Review D, American Physical Society, 2012, 85, pp.011102. ⟨10.1103/PhysRevD.85.011102⟩. ⟨in2p3-00672860⟩
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