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

2009/03/31 by The BABAR Collaboration, Y. Karyotakis, B. Aubert +98 · 2 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.1103/physrevd.79.091101

published as Phys.Rev.D79:091101,2009 · 8 pages, 4 figures

openalex publication_date 2009/05/28 · arxiv created 2009/06/02 · arxiv updated 2010/04/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04

Abstract

We have performed a search for the rare leptonic decays B⁺\ensuremath→\ensuremathℓ⁺\ensuremathν_\ensuremathℓ(l=e,\ensuremathμ), using data collected at the \ensuremathΥ(4S) resonance by the BABAR detector at the PEP-II storage ring. In a sample of 468\ifmmode×\else\texttimes\fi10⁶ BB pairs we find no evidence for a signal and set an upper limit on the branching fractions B(B⁺\ensuremath→\ensuremathμ⁺\ensuremathν_\ensuremathμ)<1.0\ifmmode×\else\texttimes\fi10^\ensuremath-6 and B(B⁺\ensuremath→e⁺\ensuremathν_e)<1.9\ifmmode×\else\texttimes\fi10^\ensuremath-6 at the 90% confidence level, using a Bayesian approach.

Citations

• Review of Particle Physics
• CP-Violation in the Renormalizable Theory of Weak Interaction
• Measurement of the Branching Fraction ofΥ(4S)→B0B¯0

Cited by

• Rare Decays at B Factories
• Search forB+→e+νeandB+→μ+νμdecays using hadronic tagging

Related

• Search for the radiative leptonic decay B+ --> gamma l+ nu
• A search for the decays B⁺→ e⁺ ν_e and B⁺→ μ⁺ ν_μ using hadronic-tag reconstruction
• Search for Decays of B0 Mesons into Pairs of Leptons
• A Search for the B⁰ → e⁺e^-γ and B⁰ → μ⁺μ^-γ Decays
• A Search for B+ to mu+ nu_mu