Search for B̅ →Λ[subscript c][superscript +]Xℓ[superscript -]ν̅ [subscript ℓ] decays in events with a fully reconstructed B meson
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Author(s)
Dujmic, Denis
Sciolla, Gabriella
Cowan, Ray F
Date Issued
January 2012
Journal
Physical Review D
Publisher
American Physical Society
Citation
Lees, J. et al. “Search for B̅ →Λ[subscript c][superscript +]Xℓ[superscript -]ν̅ [subscript ℓ] decays in events with a fully reconstructed B meson.” Physical Review D 85.1 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
We present a search for semileptonic B decays to the charmed baryon Λ[subscript c][superscript +] based on 420 fb[superscript -1] of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e[superscript +]e[superscript -] 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 B[superscript 0] mixing. We obtain a 90% confidence level upper limit of B(B̅ →Λ[subscript c][superscript +]Xℓ[superscript -]ν̅ [subscript ℓ])/B(B̅ →Λ[subscript c][superscript +]X)<3.5%.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.85.011102
