We report the observation of the baryonic B decay (B) over bar (0) -> Lambda(+)(c)Lambda K- with a significance larger than 7 standard deviations based on 471 x 10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II storage ring at SLAC. We measure the branching fraction for the decay (B) over bar (0) -> Lambda(+)(c)Lambda K- to be (3.8 +/- 0.8(stat) +/- 0.2(sys) +/- 1.0(Lambda c)(+)) x 10(-5). The uncertainties are statistical, systematic, and due to the uncertainty in the Lambda(+)(c) branching fraction. We find that the Lambda K-+(c)- invariant-mass distribution shows an enhancement above 3.5 GeV/c(2).

Observation of the baryonic B decay (B)over-bar(0) -> Lambda(+)(c)(Lambda)over-barK(-) / J. p., L., V., P., V., T., J. g., T., E., G., M., M., D. a., M., A., P., M., P., G., E., B., S., L., S., D. n., B., L. t., K., Y. g., K., G., L., H., K., T., S., D. j., A., C., H., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 84:7(2011), p. 071102. [10.1103/physrevd.84.071102]

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

CAVOTO, Gianluca;FACCINI, Riccardo;FERRONI, Fernando;
2011

Abstract

We report the observation of the baryonic B decay (B) over bar (0) -> Lambda(+)(c)Lambda K- with a significance larger than 7 standard deviations based on 471 x 10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II storage ring at SLAC. We measure the branching fraction for the decay (B) over bar (0) -> Lambda(+)(c)Lambda K- to be (3.8 +/- 0.8(stat) +/- 0.2(sys) +/- 1.0(Lambda c)(+)) x 10(-5). The uncertainties are statistical, systematic, and due to the uncertainty in the Lambda(+)(c) branching fraction. We find that the Lambda K-+(c)- invariant-mass distribution shows an enhancement above 3.5 GeV/c(2).
2011
01 Pubblicazione su rivista::01a Articolo in rivista
Observation of the baryonic B decay (B)over-bar(0) -> Lambda(+)(c)(Lambda)over-barK(-) / J. p., L., V., P., V., T., J. g., T., E., G., M., M., D. a., M., A., P., M., P., G., E., B., S., L., S., D. n., B., L. t., K., Y. g., K., G., L., H., K., T., S., D. j., A., C., H., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 84:7(2011), p. 071102. [10.1103/physrevd.84.071102]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/440272
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