Garra Ticó, JordiGraugés Pous, EugeniBABAR Collaboration2019-04-082019-04-082011-10-101550-7998https://hdl.handle.net/2445/131754We use ( 111 ± 1 ) million Υ ( 3 S ) and ( 89 ± 1 ) million Υ ( 2 S ) events recorded by the BABAR detector at the PEP-II B-factory at SLAC to perform a study of radiative transitions between bottomonium states using photons that have been converted to e + e − pairs by the detector material. We observe Υ ( 3 S ) → γ χ b 0 , 2 ( 1 P ) decay, make precise measurements of the branching fractions for χ b 1 , 2 ( 1 P , 2 P ) → γ Υ ( 1 S ) and χ b 1 , 2 ( 2 P ) → γ Υ ( 2 S ) decays, and search for radiative decay to the η b ( 1 S ) and η b ( 2 S ) states.17 p.application/pdfeng(c) American Physical Society, 2011Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article6020102019-04-08info:eu-repo/semantics/openAccess