Using e+e- annihilation data of 2.93 fb-1 collected at center-of-mass energy s=3.773 GeV with the BESIII detector, we measure the absolute branching fraction of D0→K-μ+νμ with significantly improved precision: BD0→K-μ+νμ=(3.413±0.019stat±0.035syst)%. Combining with our previous measurement of BD0→K-e+νe, the ratio of the two branching fractions is determined to be BD0→K-μ+νμ/BD0→K-e+νe=0.974±0.007stat±0.012syst, which agrees with the theoretical expectation of lepton flavor universality within the uncertainty. A study of the ratio of the two branching fractions in different four-momentum transfer regions is also performed, and no evidence for lepton flavor universality violation is found with current statistics. Taking inputs from global fi...
We present measurements of the branching fractions for the decays B → Kμ+μ− and B → Ke+e−, and their...
We report the first observation of D+→τ+ντ with a significance of 5.1σ. We measure B(D+→τ+ντ)=(1.20±...
International audienceThe ratio of branching fractions R(D*-)≡B(B0→D*-τ+ντ)/B(B0→D*-μ+νμ) is measure...
By analyzing an e+e- annihilation data sample corresponding to an integrated luminosity of 2.93 fb-1...
Using a dataset of 6.32 fb-1 of e+e- annihilation data collected with the BESIII detector at center-...
Using e(+)e(-) annihilation data of 2.93 fb(-1) collected at center-of-mass energy root s = 3.773 Ge...
Using e(+)e(-) annihilation data of 2.93 fb(-1) collected at center-of-mass energy root s = 3.773 Ge...
Using $e^+e^−$ annihilation data of 2.93 fb$^{−1}$ collected at center-of-mass energy $\sqrt{s}$ = 3...
By analyzing 6.32 fb − 1 of e+ e− annihilation data collected at the center-of-mass energies between...
The absolute branching fraction of Λ→pμ-ν¯μ is reported for the first time based on an e+e- annihila...
The ratio of branching fractions R(D∗-)≡B(B0→D∗-τ+ντ)/B(B0→D∗-μ+νμ) is measured using a data sample ...
The ratio of branching fractions R(D*−) ≡ B(B0 → D*− τ+ ν_τ) / B(B0 → D*− μ+ ν_μ) is measured using ...
Using a data sample corresponding to an integrated luminosity of $2.93\,\rm fb^{-1}$ taken at a cent...
The ratio of branching fractions (D∗−)≡(B0→D∗−τ+ντ)/(B0→D∗−μ+νμ) is measured using a data sample ...
We present measurements of the branching fractions for the decays B → Kμ+μ− and B → Ke+e−, and their...
We present measurements of the branching fractions for the decays B → Kμ+μ− and B → Ke+e−, and their...
We report the first observation of D+→τ+ντ with a significance of 5.1σ. We measure B(D+→τ+ντ)=(1.20±...
International audienceThe ratio of branching fractions R(D*-)≡B(B0→D*-τ+ντ)/B(B0→D*-μ+νμ) is measure...
By analyzing an e+e- annihilation data sample corresponding to an integrated luminosity of 2.93 fb-1...
Using a dataset of 6.32 fb-1 of e+e- annihilation data collected with the BESIII detector at center-...
Using e(+)e(-) annihilation data of 2.93 fb(-1) collected at center-of-mass energy root s = 3.773 Ge...
Using e(+)e(-) annihilation data of 2.93 fb(-1) collected at center-of-mass energy root s = 3.773 Ge...
Using $e^+e^−$ annihilation data of 2.93 fb$^{−1}$ collected at center-of-mass energy $\sqrt{s}$ = 3...
By analyzing 6.32 fb − 1 of e+ e− annihilation data collected at the center-of-mass energies between...
The absolute branching fraction of Λ→pμ-ν¯μ is reported for the first time based on an e+e- annihila...
The ratio of branching fractions R(D∗-)≡B(B0→D∗-τ+ντ)/B(B0→D∗-μ+νμ) is measured using a data sample ...
The ratio of branching fractions R(D*−) ≡ B(B0 → D*− τ+ ν_τ) / B(B0 → D*− μ+ ν_μ) is measured using ...
Using a data sample corresponding to an integrated luminosity of $2.93\,\rm fb^{-1}$ taken at a cent...
The ratio of branching fractions (D∗−)≡(B0→D∗−τ+ντ)/(B0→D∗−μ+νμ) is measured using a data sample ...
We present measurements of the branching fractions for the decays B → Kμ+μ− and B → Ke+e−, and their...
We present measurements of the branching fractions for the decays B → Kμ+μ− and B → Ke+e−, and their...
We report the first observation of D+→τ+ντ with a significance of 5.1σ. We measure B(D+→τ+ντ)=(1.20±...
International audienceThe ratio of branching fractions R(D*-)≡B(B0→D*-τ+ντ)/B(B0→D*-μ+νμ) is measure...