S. Gu

collaborators

3 papers

hep-ex2020

Observation of $η^{'} \to π^{+} π^{-} μ^{+} μ^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +486

Using $(1310.6 \pm 7.0) \times 1 0^{6} J / ψ$ events acquired with the BESIII detector at the BEPCII storage rings, the decay $η^{'} \to π^{+} π^{-} μ^{+} μ^{-}$ is observed for the fir…

hep-ex2020

Model independent determination of the spin of the $Ω^{-}$ and its polarization alignment in $ψ (3686) \to Ω^{-} Ω ˉ^{+}$

M. Ablikim, M. N. Achasov, P. Adlarson +484

We present an analysis of the process $ψ (3686) \to Ω^{-} Ω ˉ^{+}$ ( $Ω^{-} \to K^{-} Λ$ , $Ω ˉ^{+} \to K^{+} Λ ˉ$ , $Λ \to p π^{-}$ , $Λ ˉ \to p ˉ π^{+}$ ) based on a data set of $448 \times 1 0^{6}$ $…

hep-ex2020

Inclusive charged and neutral particle multiplicity distributions in $χ_{c J}$ and $J / ψ$ decays

BESIII collaboration, M. Ablikim, M. N. Achasov +474

Using a sample of 106 million $ψ (3686)$ decays, $ψ (3686) \to γ χ_{c J} (J = 0, 1, 2)$ and $ψ (3686) \to γ χ_{c J}, χ_{c J} \to γ J / ψ$ $(J = 1, 2)$ events are utilized to study inclusive $…

Observation of η′→π+π−μ+μ−

Model independent determination of the spin of the Ω− and its polarization alignment in ψ(3686)→Ω−Ωˉ+

Inclusive charged and neutral particle multiplicity distributions in χcJ​ and J/ψ decays

Observation of $η^{'} \to π^{+} π^{-} μ^{+} μ^{-}$

Model independent determination of the spin of the $Ω^{-}$ and its polarization alignment in $ψ (3686) \to Ω^{-} Ω ˉ^{+}$

Inclusive charged and neutral particle multiplicity distributions in $χ_{c J}$ and $J / ψ$ decays