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http://hdl.handle.net/2445/131522
Title: | Study of B→X(3872)K, with X(3872)→J/ψπ+π− |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 3-Jun-2008 |
Publisher: | American Physical Society |
Abstract: | We present measurements of the decays B + → X ( 3872 ) K + and B 0 → X ( 3872 ) K 0 with X ( 3872 ) → J / ψ π + π − . The data sample used, collected with the BABAR detector at the PEP-II e + e − asymmetric-energy storage ring, corresponds to 455 × 10 6 B ¯¯¯ B pairs. Branching fraction measurements of B ( B + → X ( 3872 ) K + ) × B ( X ( 3872 ) → J / ψ π + π − ) = ( 8.4 ± 1.5 ± 0.7 ) × 10 − 6 and B ( B 0 → X ( 3872 ) K 0 ) × B ( X ( 3872 ) → J / ψ π + π − ) = ( 3.5 ± 1.9 ± 0.4 ) × 10 − 6 are obtained. We set an upper limit on the natural width of the X ( 3872 ) of Γ < 3.3 MeV / c 2 at the 90% confidence level. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.77.111101 |
It is part of: | Physical Review D, 2008, vol. 77, num. 11, p. 111101 |
URI: | http://hdl.handle.net/2445/131522 |
Related resource: | https://doi.org/10.1103/PhysRevD.77.111101 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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