Garra Ticó, JordiGraugés Pous, EugeniBABAR Collaboration2019-04-082019-04-082010-07-091550-7998https://hdl.handle.net/2445/131734We 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.8 p.application/pdfengcc by (c) CERN; LHCb Collaboration, 2010http://creativecommons.org/licenses/by/3.0/es/Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article6019502019-04-08info:eu-repo/semantics/openAccess