We measure the branching ratio of the purely leptonic decay of the D+ meson with unprecedented precision as B(D+→μ+ν)=(3.82±0. 32±0.09)×10-4, using 818pb-1 of data taken on the ψ(3770) resonance with the CLEO-c detector at the CESR collider. We use this determination to derive a value for the pseudoscalar decay constant fD+, combining with measurements of the D+ lifetime and assuming |Vcd|=|Vus|. We find fD+=(205.8±8.5±2.5)MeV. The decay rate asymmetry Γ(D+→μ+ν)-Γ(D-→μ-ν̄)Γ(D+→μ +ν)+Γ(D-→μ-ν̄)=0.08±0.08, consistent with no CP violation. We also set 90% confidence level upper limits on B(D+→τ+ν )<1.2×10-3 and B(D+→e+ν)<8.8×10-6. © 2008 The American Physical Society
The absolute branching fraction for the decay D+ -> mu(+)nu has been directly measured based on a...
Using a 3.19 fb$^{−1}$ data sample collected at an $e^+e^−$ center-of-mass energy of $E_{\rm cm}$=4....
We measure the absolute branching fraction for D0→K-π+ using partial reconstruction of B̅ 0→D*+Xℓ-ν̅...
AbstractThe absolute branching fraction for the decay D+→μ+ν has been directly measured based on a d...
Using a 3.19 fb-1 data sample collected at an e+e- center-of-mass energy of Ecm=4.178 GeV with the B...
We report a measurement of the branching fraction B(D+→μ+νμ)=[3.71±0.19(stat)±0.06(sys)]×10−4 based ...
We report a measurement of the branching fraction B(D+→μ+νμ)= [3.71±0.19(stat)±0.06(sys)]×10-4 based...
Analyzing 600pb-1 of e+e- collisions at 4170 MeV center-of-mass energy with the CLEO-c detector, we ...
We extract a relatively precise value for the decay constant of the D+ meson by measuring B(D+->mu(+...
We have studied the leptonic decay Ds+→τ+ντ, via the decay channel τ+→e+νeν̄τ, using a sample of tag...
Using 230.2 fb − 1 of e + e − annihilation data collected with the BABAR detector at and near th...
Using 230.2fb-1 of e+e- annihilation data collected with the BABAR detector at and near the peak of ...
The Beijing Spectrometer (BES) experiment has observed purely leptonic decays of the Ds meson in the...
Two analysis have been described in this work. In the first analysis, we measure the decay constant ...
Using 230.2fb-1 of e+e- annihilation data collected with the BABAR detector at and near the peak of ...
The absolute branching fraction for the decay D+ -> mu(+)nu has been directly measured based on a...
Using a 3.19 fb$^{−1}$ data sample collected at an $e^+e^−$ center-of-mass energy of $E_{\rm cm}$=4....
We measure the absolute branching fraction for D0→K-π+ using partial reconstruction of B̅ 0→D*+Xℓ-ν̅...
AbstractThe absolute branching fraction for the decay D+→μ+ν has been directly measured based on a d...
Using a 3.19 fb-1 data sample collected at an e+e- center-of-mass energy of Ecm=4.178 GeV with the B...
We report a measurement of the branching fraction B(D+→μ+νμ)=[3.71±0.19(stat)±0.06(sys)]×10−4 based ...
We report a measurement of the branching fraction B(D+→μ+νμ)= [3.71±0.19(stat)±0.06(sys)]×10-4 based...
Analyzing 600pb-1 of e+e- collisions at 4170 MeV center-of-mass energy with the CLEO-c detector, we ...
We extract a relatively precise value for the decay constant of the D+ meson by measuring B(D+->mu(+...
We have studied the leptonic decay Ds+→τ+ντ, via the decay channel τ+→e+νeν̄τ, using a sample of tag...
Using 230.2 fb − 1 of e + e − annihilation data collected with the BABAR detector at and near th...
Using 230.2fb-1 of e+e- annihilation data collected with the BABAR detector at and near the peak of ...
The Beijing Spectrometer (BES) experiment has observed purely leptonic decays of the Ds meson in the...
Two analysis have been described in this work. In the first analysis, we measure the decay constant ...
Using 230.2fb-1 of e+e- annihilation data collected with the BABAR detector at and near the peak of ...
The absolute branching fraction for the decay D+ -> mu(+)nu has been directly measured based on a...
Using a 3.19 fb$^{−1}$ data sample collected at an $e^+e^−$ center-of-mass energy of $E_{\rm cm}$=4....
We measure the absolute branching fraction for D0→K-π+ using partial reconstruction of B̅ 0→D*+Xℓ-ν̅...