We present a search for the decay B^+→ℓ^+ν_ℓ(ℓ=τ, μ, or e) in (458.9±5.1)×10^6 BB̅ pairs recorded with the BABAR detector at the PEP-II B-factory. We search for these B decays in a sample of B^+B^- events where one B-meson is reconstructed as B^-→D^0ℓ^-ν̅ X. Using the method of Feldman and Cousins, we obtain B(B^+→τ^+ν_τ)=(1.7±0.8±0.2)×10^(-4), which excludes zero at 2.3σ. We interpret the central value in the context of the standard model and find the B meson decay constant to be f_B^2=(62±31)×10^3 MeV^2. We find no evidence for B^+→e^+ν_e and B^+→μ^+ν_μ and set upper limits at the 90% C.L. B(B^+→e^+ν_e)<0.8×10^(-5) and B(B^+→μ^+ν_μ)<1.1×10^(-5)
A search has been made for the decays B + → ϕ π + and B 0 → ϕ π 0 in a data sample of approximately ...
We present a search for the radiative leptonic decay B+→ℓ+νℓγ, where ℓ=e, μ, using a data sample of ...
We search for the rare leptonic decay B+→τ+ντ in a sample of 232×106 BB̅ pairs collected with the BA...
We present a search for the decay B+→ℓ+νℓ(ℓ=τ,μ, or e) in (458.9±5.1)×106 BB̅ pairs recorded with th...
We present a search for the decay B+→ℓ +νℓ(ℓ=τ,μ,ore) in (458.9±5.1)×106 BB̄ pairs recorded with the...
We present a search for the decay B+→ℓ+νℓ(ℓ=τ,μ, or e) in (458.9±5.1)×106 BB̅ pairs recorded with t...
We present a search for the decay B + → ℓ + ν ℓ ( ℓ = τ , μ , or e ) in ( 458.9 ± 5.1 ) × 10 6 B...
We present a search for the decay B+→ℓ +νℓ(ℓ=τ,μ,ore) in (458.9±5.1)×106 BB̄ pairs recorded with the...
We present a search for the decay B+→ℓ+νℓ(ℓ=τ,μ, or e) in (458.9±5.1)×106 BB⎯⎯⎯ pairs recorded with ...
We present a search for the decay B+→τ+ν using 383×106BB̅ pairs collected at the Υ(4S) resonance wit...
We present a search for the decay B + → τ + ν using 383 × 10 6 B ¯¯¯ B pairs collected at the Υ ( 4 ...
We present a search for the decay B+→τ+ν using 383×10^6BB̅ pairs collected at the Υ(4S) resonance wi...
A search has been made for the decays B + → ϕ π + and B 0 → ϕ π 0 in a data sample of approximately ...
We present a search for the radiative leptonic decay B+→ℓ+νℓγ, where ℓ=e, μ, using a data sample of ...
We search for the rare leptonic decay B+→τ+ντ in a sample of 232×106 BB̅ pairs collected with the BA...
We present a search for the decay B+→ℓ+νℓ(ℓ=τ,μ, or e) in (458.9±5.1)×106 BB̅ pairs recorded with th...
We present a search for the decay B+→ℓ +νℓ(ℓ=τ,μ,ore) in (458.9±5.1)×106 BB̄ pairs recorded with the...
We present a search for the decay B+→ℓ+νℓ(ℓ=τ,μ, or e) in (458.9±5.1)×106 BB̅ pairs recorded with t...
We present a search for the decay B + → ℓ + ν ℓ ( ℓ = τ , μ , or e ) in ( 458.9 ± 5.1 ) × 10 6 B...
We present a search for the decay B+→ℓ +νℓ(ℓ=τ,μ,ore) in (458.9±5.1)×106 BB̄ pairs recorded with the...
We present a search for the decay B+→ℓ+νℓ(ℓ=τ,μ, or e) in (458.9±5.1)×106 BB⎯⎯⎯ pairs recorded with ...
We present a search for the decay B+→τ+ν using 383×106BB̅ pairs collected at the Υ(4S) resonance wit...
We present a search for the decay B + → τ + ν using 383 × 10 6 B ¯¯¯ B pairs collected at the Υ ( 4 ...
We present a search for the decay B+→τ+ν using 383×10^6BB̅ pairs collected at the Υ(4S) resonance wi...
A search has been made for the decays B + → ϕ π + and B 0 → ϕ π 0 in a data sample of approximately ...
We present a search for the radiative leptonic decay B+→ℓ+νℓγ, where ℓ=e, μ, using a data sample of ...
We search for the rare leptonic decay B+→τ+ντ in a sample of 232×106 BB̅ pairs collected with the BA...