Search for Bbar --> Lambda_c+ X l- nu Decays in Events With a Fully Reconstructed B Meson - IN2P3 - Institut national de physique nucléaire et de physique des particules
Article Dans Une Revue Physical Review D Année : 2012

Search for Bbar --> Lambda_c+ X l- nu Decays in Events With a Fully Reconstructed B Meson

Résumé

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 %.

Dates et versions

in2p3-00672860 , version 1 (22-02-2012)

Identifiants

Citer

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, 2012, 85, pp.011102. ⟨10.1103/PhysRevD.85.011102⟩. ⟨in2p3-00672860⟩
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