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http://hdl.handle.net/2445/131539
Title: | Study of B-meson decays to ηcK(*), ηc(2S)K(*), and ηcγK(*) |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 18-Jul-2008 |
Publisher: | American Physical Society |
Abstract: | We study two-body B -meson decays to a charmonium state ( η c , η c ( 2 S ) or h c ) and a K + or K * 0 ( 892 ) meson using a sample of 349 fb − 1 of data collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at the Stanford Linear Accelerator Center. We measure B ( B 0 → η c K * 0 ) = ( 5.7 ± 0.6 ( stat ) ± 0.9 ( syst ) ) × 10 − 4 , B ( B 0 → η c ( 2 S ) K * 0 ) < 3.9 × 10 − 4 , B ( B + → h c K + ) × B ( h c → η c γ ) < 4.8 × 10 − 5 and B ( B 0 → h c K * 0 ) × B ( h c → η c γ ) < 2.2 × 10 − 4 at the 90% C.L., and B ( η c ( 2 S ) → K ¯¯¯¯ K π ) = ( 1.9 ± 0.4 ( stat ) ± 1.1 ( syst ) ) % . We also measure the mass and width of the η c meson to be m ( η c ) = ( 2985.8 ± 1.5 ( stat ) ± 3.1 ( syst ) ) MeV / c 2 and Γ ( η c ) = ( 36.3 + 3.7 − 3.6 ( stat ) ± 4.4 ( syst ) ) MeV . |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.78.012006 |
It is part of: | Physical Review D, 2008, vol. 78, num. 1, p. 012006 |
URI: | http://hdl.handle.net/2445/131539 |
Related resource: | https://doi.org/10.1103/PhysRevD.78.012006 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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