We report a measurement of ratio R(D ∗ ) = B(B¯0 → D ∗+τ −ν¯τ )/B(B¯0 → D ∗+ℓ −ν¯ℓ), where ℓ denotes an electron or a muon. The results are based on a data sample containing 772 × 106 BB¯ pairs recorded at the Υ(4S) resonance with the Belle detector at the KEKB e +e − collider. We select a sample of B 0B¯0 pairs by reconstructing both B mesons in semileptonic decays to D ∗∓ℓ ±. We measure R(D ∗ ) = 0.302± 0.030(stat) ± 0.011(syst), which is within 1.6σ of the Standard Model theoretical expectation, where σ is the standard deviation including systematic uncertainties
The inclusive semileptonic branching ratios b→e ν X, μ ν X, τ ν X and ν X have been measured at LEP ...
We report a measurement of the branching fraction ratios R(D(*)) of B¯→D(*)τ-ν¯τ relative to B¯→D(*)...
We report a measurement of the branching fraction of B+→τ+ντ decays using a data sample of 772×106BB...
We report a measurement of the ratio R(D*)=B(B¯0→D*+τ-ν¯τ)/B(B¯0→D*+ℓ-ν¯ℓ), where ℓ denotes an elect...
We report a measurement of the branching fraction ratios R(D(*)) of ¯B→D(*)τ−¯ντ relative to ¯B→D(*)...
The experimental results on the ratios of branching fractions R(D)=B(B→Dτ-ντ)/B(B→Dℓ-νℓ) and R(D∗)=B...
The branching fraction ratio R(D∗)≡B(¯B0→D*+τ−¯ντ)/B(¯B0→D*+μ−¯νμ) is measured using a sample of pro...
The inclusive semileptonic branching ratios b→eνX,μ νX,τ νX andνX have been measured at LEP with the...
We report on measurements of the decays of B¯ mesons into the semileptonic final states B¯→D(∗)π+π-ν...
We present a measurement of the decay B-→τ -ν̄τ using a data sample containing 657×106 BB̄ pairs col...
see paper for full list of authorsInternational audienceThe branching fraction ratio R(D∗)≡B(B¯¯¯0→D...
The experimental results on the ratios of branching fractions R(D)=B(B[over ¯]→Dτ^{-}ν[over ¯]_{τ})/...
The branching fraction ratio R(D∗)≡B(B¯0→D∗+τ-ν¯τ)/B(B¯0→D∗+μ-ν¯μ) is measured using a sample of pro...
The inclusive semileptonic branching ratios b→e ν X, μ ν X, τ ν X and ν X have been measured at LEP ...
We report a measurement of the branching fraction ratios R(D(*)) of B¯→D(*)τ-ν¯τ relative to B¯→D(*)...
We report a measurement of the branching fraction of B+→τ+ντ decays using a data sample of 772×106BB...
We report a measurement of the ratio R(D*)=B(B¯0→D*+τ-ν¯τ)/B(B¯0→D*+ℓ-ν¯ℓ), where ℓ denotes an elect...
We report a measurement of the branching fraction ratios R(D(*)) of ¯B→D(*)τ−¯ντ relative to ¯B→D(*)...
The experimental results on the ratios of branching fractions R(D)=B(B→Dτ-ντ)/B(B→Dℓ-νℓ) and R(D∗)=B...
The branching fraction ratio R(D∗)≡B(¯B0→D*+τ−¯ντ)/B(¯B0→D*+μ−¯νμ) is measured using a sample of pro...
The inclusive semileptonic branching ratios b→eνX,μ νX,τ νX andνX have been measured at LEP with the...
We report on measurements of the decays of B¯ mesons into the semileptonic final states B¯→D(∗)π+π-ν...
We present a measurement of the decay B-→τ -ν̄τ using a data sample containing 657×106 BB̄ pairs col...
see paper for full list of authorsInternational audienceThe branching fraction ratio R(D∗)≡B(B¯¯¯0→D...
The experimental results on the ratios of branching fractions R(D)=B(B[over ¯]→Dτ^{-}ν[over ¯]_{τ})/...
The branching fraction ratio R(D∗)≡B(B¯0→D∗+τ-ν¯τ)/B(B¯0→D∗+μ-ν¯μ) is measured using a sample of pro...
The inclusive semileptonic branching ratios b→e ν X, μ ν X, τ ν X and ν X have been measured at LEP ...
We report a measurement of the branching fraction ratios R(D(*)) of B¯→D(*)τ-ν¯τ relative to B¯→D(*)...
We report a measurement of the branching fraction of B+→τ+ντ decays using a data sample of 772×106BB...