Yao Zhang

collaborators

2 papers

hep-ex2024

Observation of $η_{c} (2 S) \to K^{+} K^{-} η$

BESIII Collaboration, M. Ablikim, M. N. Achasov +645

By analyzing $(27.12 \pm 0.14) \times 1 0^{8}$ $ψ (3686)$ events accumulated with the BESIII detector, the decay $η_{c} (2 S) \to K^{+} K^{-} η$ is observed for the first time with a sig…

hep-ex2024

Precision measurement of the branching fraction of \boldmath $J / ψ \to K^{+} K^{-}$ via $ψ (2 S) \to π^{+} π^{-} J / ψ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +615

Using a sample of $448.1 \times 1 0^{6}$ $ψ (2 S)$ events collected with the BESIII detector, we perform a study of the decay $J / ψ \to K^{+} K^{-}$ via $ψ (2 S) \to π^{+} π^{-} J / ψ$ . T…

Observation of ηc​(2S)→K+K−η

Precision measurement of the branching fraction of \boldmath J/ψ→K+K− via ψ(2S)→π+π−J/ψ

Observation of $η_{c} (2 S) \to K^{+} K^{-} η$

Precision measurement of the branching fraction of \boldmath $J / ψ \to K^{+} K^{-}$ via $ψ (2 S) \to π^{+} π^{-} J / ψ$