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Title: | Evidence for X(3872)→ψ(2S)γ in B±→X(3872)K± Decays and a Study of B→c¯cγK |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 30-Mar-2009 |
Publisher: | American Physical Society |
Abstract: | In a search for B → c ¯ c γ K decays with the BABAR detector, where c ¯ c includes J / ψ and ψ ( 2 S ) , and K includes K ± , K 0 S , and K ∗ ( 892 ) , we find evidence for X ( 3872 ) → J / ψ γ and X ( 3872 ) → ψ ( 2 S ) γ with 3.6 σ and 3.5 σ significance, respectively. We measure the product of branching fractions B ( B ± → X ( 3872 ) K ± ) × B ( X ( 3872 ) → J / ψ γ ) = [ 2.8 ± 0.8 ( stat ) ± 0.1 ( syst ) ] × 10 − 6 and B ( B ± → X ( 3872 ) K ± ) × B ( X ( 3872 ) → ψ ( 2 S ) γ ) = [ 9.5 ± 2.7 ( stat ) ± 0.6 ( syst ) ] × 10 − 6 . |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.102.132001 |
It is part of: | Physical Review Letters, 2009, vol. 102, num. 13, p. 132001 |
URI: | http://hdl.handle.net/2445/138321 |
Related resource: | https://doi.org/10.1103/PhysRevLett.102.132001 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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