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.

Observation of the baryonic B-decay (B)over-bar(0) -> Lambda(+)(c)(p)over-barK(-)pi(+) / B., A., Y., K., J. P., L., V., P., E., P., X., P., V., T., J. G., T., E., G., M., M., A., P., M., P., G., E., B., S., L., S., M., B., D. N., B., L. T., K., Y. G., K., G., L., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 80:(2009), pp. 051105-051105. [10.1103/physrevd.80.051105]

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

CAVOTO, Gianluca;FACCINI, Riccardo;FERRONI, Fernando;GASPERO, Mario;C. Voena;
2009

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.
2009
01 Pubblicazione su rivista::01a Articolo in rivista
Observation of the baryonic B-decay (B)over-bar(0) -> Lambda(+)(c)(p)over-barK(-)pi(+) / B., A., Y., K., J. P., L., V., P., E., P., X., P., V., T., J. G., T., E., G., M., M., A., P., M., P., G., E., B., S., L., S., M., B., D. N., B., L. T., K., Y. G., K., G., L., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 80:(2009), pp. 051105-051105. [10.1103/physrevd.80.051105]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/225576
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