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2007-12-26

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/140218

Evidence for Charged B Meson Decays to a±1(1260)π0 and a01(1260)π±

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https://doi.org/10.1103/PhysRevLett.99.261801

Abstract

We 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.

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Física de partícules, Experiments

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Particle physics, Experiments

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

GARRA TICÓ, Jordi, GRAUGÉS POUS, Eugeni and BABAR Collaboration. Evidence for Charged B Meson Decays to a±1(1260)π0 and a01(1260)π±. Physical Review Letters. 2007. Vol. 99, num. 26, pags. 261801. ISSN 0031-9007. [consulted: 20 of August of 2026]. Available at: https://hdl.handle.net/2445/140218

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