Garra Ticó, JordiGraugés Pous, EugeniBABAR Collaboration2019-04-052019-04-052008-09-151550-7998https://hdl.handle.net/2445/131579We report the results of a search for the decay B 0 → K * + K * − with a sample of 454 ± 5 million B ¯¯¯ B pairs collected with the BABAR detector at the PEP-II asymmetric-energy e + e − collider at the Stanford Linear Accelerator Center. We obtain an upper limit at the 90% confidence level on the branching fraction for B ( B 0 → K * + K * − ) < 2.0 × 10 − 6 , assuming the decay is fully longitudinally polarized.9 p.application/pdfeng(c) American Physical Society, 2008Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article5777222019-04-05info:eu-repo/semantics/openAccess