Garra Ticó, JordiGraugés Pous, EugeniBABAR Collaboration2019-09-172019-09-172007-12-260031-9007https://hdl.handle.net/2445/140218We present measurements of the branching fractions for the decays B ± → a ± 1 ( 1260 ) π 0 and B ± → a 0 1 ( 1260 ) π ± from a data sample of 232 × 10 6 B ¯¯¯ B pairs produced in e + e − annihilation through the Υ ( 4 S ) resonance. We measure the branching fraction B ( B ± → a ± 1 ( 1260 ) π 0 ) × B ( a ± 1 ( 1260 ) → π − π + π ± ) = ( 13.2 ± 2.7 ± 2.1 ) × 10 − 6 with a significance of 4.2 σ , and the branching fraction B ( B ± → a 0 1 ( 1260 ) π ± ) × B ( a 0 1 ( 1260 ) → π − π + π 0 ) = ( 20.4 ± 4.7 ± 3.4 ) × 10 − 6 with a significance of 3.8 σ , where the first error quoted is statistical and the second is systematic.7 p.application/pdfeng(c) American Physical Society, 2007Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article5581822019-09-17info:eu-repo/semantics/openAccess