We present the results of a search for the decay B0→τ+τ- in a data sample of (232±3)×10^6 Υ(4S)→BB̅ 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(B0→τ+τ-)<4.1×10-3 at the 90% confidence level.
Search for the Rare Decay B0→τ+τ- at BABAR
SIMI, GABRIELE;MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;
2006
Abstract
We present the results of a search for the decay B0→τ+τ- in a data sample of (232±3)×10^6 Υ(4S)→BB̅ 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(B0→τ+τ-)<4.1×10-3 at the 90% confidence level.File in questo prodotto:
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