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Title: Search for for ¯B → Λ+cXℓ−¯νℓ decays in events with a fully reconstructed B meson
Author: Garra Ticó, Jordi
Graugés Pous, Eugeni
BABAR Collaboration
Keywords: Física de partícules
Mesons (Física nuclear)
Particle physics
Mesons (Nuclear physics)
Issue Date: 12-Jan-2012
Publisher: American Physical Society
Abstract: We present a search for semileptonic B decays to the charmed baryon Λ + c based on 420     fb − 1 of data collected at the Υ ( 4 S ) 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 B 0 mixing. We obtain a 90% confidence level upper limit of B ( ¯¯¯ B → Λ + c X ℓ − ¯ ν ℓ ) / B ( ¯¯¯ B → Λ + c X ) < 3.5 % .
Note: Reproducció del document publicat a:
It is part of: Physical Review D, 2012, vol. 85, num. 1, p. 011102(R)
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ISSN: 1550-7998
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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