X. M. Zhang

collaborators

3 papers

hep-ex2025

Precision measurement of the branching fraction for the decay $ψ (2 S) \to τ^{+} τ^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +684

Using $(2259.3 \pm 11.1) \times 1 0^{6}$ $ψ (2 S)$ events acquired with the BESIII detector, the branching fraction of $ψ (2 S) \to τ^{+} τ^{-}$ is measured with improved precision t…

hep-ex2024

Search for the rare decay $J / ψ \to γ D^{0} + c . c .$ at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +650

Using $(10087 \pm 44) \times 1 0^{6} J / ψ$ events collected with the BESIII detector, we search for the rare decay $J / ψ \to γ D^{0} + c . c .$ for the first time. No obvious signal is observed and t…

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…

Precision measurement of the branching fraction for the decay ψ(2S)→τ+τ−

Search for the rare decay J/ψ→γD0+c.c. at BESIII

Observation of ηc​(2S)→K+K−η

Precision measurement of the branching fraction for the decay $ψ (2 S) \to τ^{+} τ^{-}$

Search for the rare decay $J / ψ \to γ D^{0} + c . c .$ at BESIII

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