We use (111 +/- 1) million Gamma(3S) and (89 +/- 1) million Gamma(2S) events recorded by the BABAR detector at the PEP-II B-factory at SLAC to perform a study of radiative transitions between bottomonium states using photons that have been converted to e(+)e(-) pairs by the detector material. We observe Gamma(3S) -> gamma chi b(0,2)(1P) decay, make precise measurements of the branching fractions for chi b(1,2)(1P, 2P) -> gamma Gamma(1S) and chi b(1,2)(2P) -> gamma Gamma(2S) decays, and search for radiative decay to the eta(b)(1S) and eta(b)(2S) states.

Study of radiative bottomonium transitions using converted photons / J. p., L., V., P., E., 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., Yu G., K., G., L., H., K., T., S., D. j., A., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 84:7(2011), p. 072002. [10.1103/physrevd.84.072002]

Study of radiative bottomonium transitions using converted photons

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

Abstract

We use (111 +/- 1) million Gamma(3S) and (89 +/- 1) million Gamma(2S) events recorded by the BABAR detector at the PEP-II B-factory at SLAC to perform a study of radiative transitions between bottomonium states using photons that have been converted to e(+)e(-) pairs by the detector material. We observe Gamma(3S) -> gamma chi b(0,2)(1P) decay, make precise measurements of the branching fractions for chi b(1,2)(1P, 2P) -> gamma Gamma(1S) and chi b(1,2)(2P) -> gamma Gamma(2S) decays, and search for radiative decay to the eta(b)(1S) and eta(b)(2S) states.
2011
01 Pubblicazione su rivista::01a Articolo in rivista
Study of radiative bottomonium transitions using converted photons / J. p., L., V., P., E., 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., Yu G., K., G., L., H., K., T., S., D. j., A., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 84:7(2011), p. 072002. [10.1103/physrevd.84.072002]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/440274
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