Search for the Rare Decay B0→τ+τ− at BABAR

Graugés Pous, EugeniBABAR Collaboration2019-09-192019-09-192006-06-230031-9007https://hdl.handle.net/2445/140473We present the results of a search for the decay B 0 → τ + τ − in a data sample of ( 232 ± 3 ) × 10 6 Υ ( 4 S ) → B ¯¯¯ B decays using the BABAR detector. Certain extensions of the standard model predict measurable levels of this otherwise rare decay. We reconstruct fully one neutral B meson and seek evidence for the signal decay in the rest of the event. We find no evidence for signal events and obtain B ( B 0 → τ + τ − ) < 4.1 × 10 − 3 at the 90% confidence level.7 p.application/pdfeng(c) American Physical Society, 2006Física de partículesExperimentsParticle physicsExperimentsSearch for the Rare Decay B0→τ+τ− at BABARinfo:eu-repo/semantics/article5425972019-09-19info:eu-repo/semantics/openAccess