We have performed a search for the rare leptonic decays B+→+ν(l=e,μ), using data collected at the Υ(4S) resonance by the BABAR detector at the PEP-II storage ring. In a sample of 468×106 BB̄ pairs we find no evidence for a signal and set an upper limit on the branching fractions B(B+→μ+νμ)<1.0×10-6 and B(B+→e+νe)<1.9×10-6 at the 90% confidence level, using a Bayesian approach.

Aubert, B., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., Prudent, X., et al. (2009). Search for the rare leptonic decays B+→l+νl (l=e,μ). PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 79(9) [10.1103/PhysRevD.79.091101].

Search for the rare leptonic decays B+→l+νl (l=e,μ)

Martinelli M;CARPINELLI, Massimo;
2009

Abstract

We have performed a search for the rare leptonic decays B+→+ν(l=e,μ), using data collected at the Υ(4S) resonance by the BABAR detector at the PEP-II storage ring. In a sample of 468×106 BB̄ pairs we find no evidence for a signal and set an upper limit on the branching fractions B(B+→μ+νμ)<1.0×10-6 and B(B+→e+νe)<1.9×10-6 at the 90% confidence level, using a Bayesian approach.
Articolo in rivista - Articolo scientifico
BABAR detector
English
2009
79
9
091101
none
Aubert, B., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., Prudent, X., et al. (2009). Search for the rare leptonic decays B+→l+νl (l=e,μ). PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 79(9) [10.1103/PhysRevD.79.091101].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389450
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