Evidence for the decay X(3872)→J/ψω

We present a study of the decays B 0 , + → J / ψ π + π − π 0 K 0 , + , using 467 × 10 6 B ¯¯¯ B pairs recorded with the BABAR detector. We present evidence for the decay mode X ( 3872 ) → J / ψ ω , with product branching fractions B ( B + → X ( 3872 ) K + ) × B ( X ( 3872 ) → J / ψ ω ) = [ 0.6 ± 0.2...

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Bibliographic Details
Published in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2010-07
Main Authors: Garra Ticó, Jordi, Graugés Pous, Eugeni, BABAR Collaboration
Format: Article
Language:English
Subjects:
Experiments
Física de partícules
Particle physics
Online Access:Get full text
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Summary:We present a study of the decays B 0 , + → J / ψ π + π − π 0 K 0 , + , using 467 × 10 6 B ¯¯¯ B pairs recorded with the BABAR detector. We present evidence for the decay mode X ( 3872 ) → J / ψ ω , with product branching fractions B ( B + → X ( 3872 ) K + ) × B ( X ( 3872 ) → J / ψ ω ) = [ 0.6 ± 0.2 ( stat ) ± 0.1 ( syst ) ] × 10 − 5 , and B ( B 0 → X ( 3872 ) K 0 ) × B ( X ( 3872 ) → J / ψ ω ) = [ 0.6 ± 0.3 ( stat ) ± 0.1 ( syst ) ] × 10 − 5 . A detailed study of the π + π − π 0 mass distribution from X ( 3872 ) decay favors a negative-parity assignment.
ISSN:1550-7998
DOI:10.1103/PhysRevD.82.011101