Graugés Pous, EugeniBABAR Collaboration2019-04-042019-04-042006-07-131550-7998https://hdl.handle.net/2445/131389A search has been made for the decays B + → ϕ π + and B 0 → ϕ π 0 in a data sample of approximately 232 × 10 6 B ¯¯¯ B pairs recorded at the Υ ( 4 S ) resonance with the BABAR detector at the PEP-II B -meson Factory at SLAC. No significant signals have been observed, and therefore upper limits have been set on the branching fractions: B ( B + → ϕ π + ) < 2.4 × 10 − 7 and B ( B 0 → ϕ π 0 ) < 2.8 × 10 − 7 at 90% probability.8 p.application/pdfeng(c) American Physical Society, 2006Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article5425802019-04-04info:eu-repo/semantics/openAccess