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http://hdl.handle.net/2445/138517| Title: | Observation of Y(3940)→J/ψω in B→J/ψωK at BABAR |
| Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
| Keywords: | Física de partícules Experiments Particle physics Experiments |
| Issue Date: | 20-Aug-2008 |
| Publisher: | American Physical Society |
| Abstract: | We present a study of the decays B 0 , + → J / ψ ω K 0 , + using 383 × 10 6 B ¯¯¯ B events obtained with the BABAR detector at PEP-II. We observe Y ( 3940 ) → J / ψ ω , with mass 3914.6 + 3.8 − 3.4 ( stat ) ± 2.0 ( syst ) MeV / c 2 , and width 34 + 12 − 8 ( stat ) ± 5 ( syst ) MeV . The ratio of B 0 and B + decay to Y K is 0.27 + 0.28 − 0.23 ( stat ) + 0.04 − 0.01 ( syst ) , and the relevant B 0 and B + branching fractions are reported. |
| Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.101.082001 |
| It is part of: | Physical Review Letters, 2008, vol. 101, num. 8, p. 082001 |
| URI: | http://hdl.handle.net/2445/138517 |
| Related resource: | https://doi.org/10.1103/PhysRevLett.101.082001 |
| ISSN: | 0031-9007 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| 577702.pdf | 355.77 kB | Adobe PDF | View/Open |
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