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Observation of the baryonic B-decay (B)over-bar(0) -> Lambda(+)(c)(p)over-barK(-)pi(+)

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BaBar Collaboration (Including:

Aubert, B., Karyotakis, Y., Lees, J. P., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Garra Tico, J., Grauges, E., Martinelli, M. et al.
). (2009) Observation of the baryonic B-decay (B)over-bar(0) -> Lambda(+)(c)(p)over-barK(-)pi(+). Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.80 (No.5). article no. 051105. doi:10.1103/PhysRevD.80.051105

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Official URL: http://dx.doi.org/10.1103/PhysRevD.80.051105

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Abstract

We report the observation of the baryonic B-decay (B) over bar (0) -> Lambda(+)(c)(p) over barK(-)pi(+), excluding contributions from the decay (B) over bar (0) -> Lambda(+)(c)(Lambda) over barK(-). Using a data sample of 467 x 10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II storage ring at SLAC, the measured branching fraction is (4.33 +/- 0.82(stat) +/- 0.33(syst) +/- 1.13(Lambda c+)) x 10(-5). In addition we find evidence for the resonant decay (B) over bar (0) -> Sigma(c)(2455)(++)(p) over barK(-) and determine its branching fraction to be (1.11 +/- 0.30(stat) +/- 0.09(syst) +/- 0.29(Lambda c+)) x 10(-5). The errors are statistical, systematic, and due to the uncertainty in the Lambda(+)(c) branching fraction. For the resonant decay (B) over bar (0) -> Lambda(+)(c)(p) over bar(K) over bar*(0) we obtain an upper limit of 2.42 x 10(-5) at 90% confidence level.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title: Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher: American Physical Society
ISSN: 1550-7998
Official Date: September 2009
Dates:
DateEvent
September 2009Published
Volume: Vol.80
Number: No.5
Number of Pages: 7
Page Range: article no. 051105
DOI: 10.1103/PhysRevD.80.051105
Status: Peer Reviewed
Publication Status: Published
Funder: DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain), STFC (United Kingdom), Marie Curie EIF (European Union), A. P. Sloan Foundation

Data sourced from Thomson Reuters' Web of Knowledge

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