We present a search for the decay B-→τ-ντ̄ in a sample of 88.9×106 BB̄ pairs recorded with the BABAR detector at the Stanford Linear Accelerator Center B factory. One of the two B mesons from the Υ(4S) is reconstructed in a hadronic or a semileptonic final state, and the decay products of the other B in the event are analyzed for consistency with a B-→τ-ν̄τ decay. We find no evidence of a signal and set an upper limit on the branching fraction of B(B-→τ-ν̄τ)<4. 2×10-4 at the 90% confidence level.

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J., Hicheur, A., et al. (2005). Search for the rare leptonic decay B-→τ-ν̄τ. PHYSICAL REVIEW LETTERS, 95(4) [10.1103/PhysRevLett.95.041804].

Search for the rare leptonic decay B-→τ-ν̄τ

CARPINELLI, Massimo;
2005

Abstract

We present a search for the decay B-→τ-ντ̄ in a sample of 88.9×106 BB̄ pairs recorded with the BABAR detector at the Stanford Linear Accelerator Center B factory. One of the two B mesons from the Υ(4S) is reconstructed in a hadronic or a semileptonic final state, and the decay products of the other B in the event are analyzed for consistency with a B-→τ-ν̄τ decay. We find no evidence of a signal and set an upper limit on the branching fraction of B(B-→τ-ν̄τ)<4. 2×10-4 at the 90% confidence level.
Articolo in rivista - Articolo scientifico
Particle accelerators; Particle detectors; BABAR detector; Decay products; Leptonic decay; High energy physics;
English
2005
95
4
041804
none
Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J., Hicheur, A., et al. (2005). Search for the rare leptonic decay B-→τ-ν̄τ. PHYSICAL REVIEW LETTERS, 95(4) [10.1103/PhysRevLett.95.041804].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389813
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