X. D. Yu

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hep-ex2024

Search for the double Dalitz decays $η / η^{'} \to e^{+} e^{-} μ^{+} μ^{-}$ and $η^{'} \to μ^{+} μ^{-} μ^{+} μ^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +653

Using a data sample of $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector, we search for the decays $η / η^{'} \to e^{+} e^{-} μ^{+} μ^{-}$ and $η^{'} \to μ^{+} μ^{-} μ^{+} μ^{-}$ v…

hep-ex2024

Measurement of cross sections of $e^{+} e^{-} \to K_{S}^{0} K_{S}^{0} ψ (3686)$ from $s =$ 4.682 to 4.951 GeV

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

The process $e^{+} e^{-} \to K_{S}^{0} K_{S}^{0} ψ (3686)$ is studied by analyzing $e^{+} e^{-}$ collision data samples collected at eight center-of-mass energies ranging from 4.682 to 4.951 GeV with…

hep-ex2024

Observation of $χ_{c 0} \to Σ^{+} Σ ˉ^{-} η$ and evidence for $χ_{c 1, 2} \to Σ^{+} Σ ˉ^{-} η$

BESIII Collaboration, M. Ablikim, M. N. Achasov +640

Using $(27.12 \pm 0.14) \times 1 0^{8}$ $ψ (3686)$ events collected with the BESIII detector, the decay $χ_{c 0} \to Σ^{+} Σ ˉ^{-} η$ is observed for the first time with a statistical sign…

hep-ex2024

Search for $Λ$ - $Λ ˉ$ oscillation in $J / ψ \to Λ Λ ˉ$ decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +643

Using $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ decays collected by the BESIII detector at the BEPCII collider, we search for baryon number violation via $Λ - Λ ˉ$ oscillation in the decay…

hep-ex2024

Study of the decays $χ_{c J} \to Λ Λ ˉ ω$

BESIII Collaboration, M. Ablikim, M. N. Achasov +644

Using $(27.12 \pm 0.14) \times 1 0^{8}$ $ψ (3686)$ events collected with the BESIII detector, we present the first observation of the decays $χ_{c J} \to Λ Λ ˉ ω$ , where $J = 0, 1, 2$ , with…

Search for the double Dalitz decays η/η′→e+e−μ+μ− and η′→μ+μ−μ+μ−

Measurement of cross sections of e+e−→KS0​KS0​ψ(3686) from s​= 4.682 to 4.951 GeV

Observation of χc0​→Σ+Σˉ−η and evidence for χc1,2​→Σ+Σˉ−η

Search for Λ-Λˉ oscillation in J/ψ→ΛΛˉ decay

Study of the decays χcJ​→ΛΛˉω

Search for the double Dalitz decays $η / η^{'} \to e^{+} e^{-} μ^{+} μ^{-}$ and $η^{'} \to μ^{+} μ^{-} μ^{+} μ^{-}$

Measurement of cross sections of $e^{+} e^{-} \to K_{S}^{0} K_{S}^{0} ψ (3686)$ from $s =$ 4.682 to 4.951 GeV

Observation of $χ_{c 0} \to Σ^{+} Σ ˉ^{-} η$ and evidence for $χ_{c 1, 2} \to Σ^{+} Σ ˉ^{-} η$

Search for $Λ$ - $Λ ˉ$ oscillation in $J / ψ \to Λ Λ ˉ$ decay

Study of the decays $χ_{c J} \to Λ Λ ˉ ω$