By analyzing $(448.1\pm2.9)\times10^6$ $\psi(3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decays of $\chi_{cJ} \to \Lambda\bar \Lambda \eta$ ($J=0$, 1 and 2) are observed for the first time with statistical significances of $13.9\sigma$, $6.7\sigma$, and $8.2\sigma$, respectively. The product branching fractions of $\psi(3686)\to\gamma\chi_{cJ}$ and $\chi_{cJ}\to \Lambda\bar \Lambda \eta$ are measured. Dividing by the world averages of the branching fractions of $\psi(3686)\to\gamma\chi_{cJ}$, the branching fractions of $\chi_{cJ}\to \Lambda\bar \Lambda \eta$ decays are determined to be $(2.31\pm0.30\pm0.21)\times10^{-4}$, $(5.86\pm1.38\pm0.68)\times10^{-5}$, and $(1.05\pm0.21\pm0.15)\times10^{-4}$ ...
Based on a data sample of $(27.08 \pm 0.14 ) \times 10^8~\psi(3686)$ events collected with the BESII...
Using $(10087\pm44)\times 10^{6}$ $J/\psi$ events collected with the BESIII detector, numerous $\Xi^...
The first observation of the decays $J\!/\!\psi \rightarrow \bar{p} \Sigma^{+} K_{S}^{0}$ and $J\!/\...
Based on a sample of $448.1\times10^6\ \psi(3686)$ events collected with the BESIII detector, a stud...
The decays $J/\psi\to\eta\Sigma^{+}\bar{\Sigma}{}^-$ and $\psi(3686)\to\eta\Sigma^{+}\bar{\Sigma}{}^...
Using a data sample of $4.481\times 10^8$ $\psi(3686)$ events collected with the BESIII detector, we...
The decay $\eta_c(2S)\to\pipieta$ is searched for through the radiative transition $\psi(3686) \to\g...
The singly Cabibbo-suppressed decay $\Lambda_{c}^{+}\to \Sigma^{-}K^{+}\pi^{+}$ is observed for the ...
Using data samples with a total integrated luminosity of approximately 18 fb$^{-1}$ collected by the...
The $\Xi^0$ asymmetry parameters are measured using entangled quantum $\Xi^0$-$\bar{\Xi}^0$ pairs fr...
We report the first search for $\bar\Lambda$--$\Lambda$ oscillations in the decay $J/\psi \to p K^- ...
By analyzing $e^+e^-$ annihilation data corresponding to an integrated luminosity of $2.93\,\rm fb^{...
The $J/\psi \to \Xi^0 \bar{\Xi}^{0}$ process and subsequent decays are investigated using $(10087 \p...
The cross sections of the $e^{+}e^{-}\to\phi\eta'$ process at center-of-mass energies from 3.508 to ...
We study the direct production of the $J^{PC}=1^{++}$ charmonium state $\chi_{c1}(1P)$ in electron-p...
Based on a data sample of $(27.08 \pm 0.14 ) \times 10^8~\psi(3686)$ events collected with the BESII...
Using $(10087\pm44)\times 10^{6}$ $J/\psi$ events collected with the BESIII detector, numerous $\Xi^...
The first observation of the decays $J\!/\!\psi \rightarrow \bar{p} \Sigma^{+} K_{S}^{0}$ and $J\!/\...
Based on a sample of $448.1\times10^6\ \psi(3686)$ events collected with the BESIII detector, a stud...
The decays $J/\psi\to\eta\Sigma^{+}\bar{\Sigma}{}^-$ and $\psi(3686)\to\eta\Sigma^{+}\bar{\Sigma}{}^...
Using a data sample of $4.481\times 10^8$ $\psi(3686)$ events collected with the BESIII detector, we...
The decay $\eta_c(2S)\to\pipieta$ is searched for through the radiative transition $\psi(3686) \to\g...
The singly Cabibbo-suppressed decay $\Lambda_{c}^{+}\to \Sigma^{-}K^{+}\pi^{+}$ is observed for the ...
Using data samples with a total integrated luminosity of approximately 18 fb$^{-1}$ collected by the...
The $\Xi^0$ asymmetry parameters are measured using entangled quantum $\Xi^0$-$\bar{\Xi}^0$ pairs fr...
We report the first search for $\bar\Lambda$--$\Lambda$ oscillations in the decay $J/\psi \to p K^- ...
By analyzing $e^+e^-$ annihilation data corresponding to an integrated luminosity of $2.93\,\rm fb^{...
The $J/\psi \to \Xi^0 \bar{\Xi}^{0}$ process and subsequent decays are investigated using $(10087 \p...
The cross sections of the $e^{+}e^{-}\to\phi\eta'$ process at center-of-mass energies from 3.508 to ...
We study the direct production of the $J^{PC}=1^{++}$ charmonium state $\chi_{c1}(1P)$ in electron-p...
Based on a data sample of $(27.08 \pm 0.14 ) \times 10^8~\psi(3686)$ events collected with the BESII...
Using $(10087\pm44)\times 10^{6}$ $J/\psi$ events collected with the BESIII detector, numerous $\Xi^...
The first observation of the decays $J\!/\!\psi \rightarrow \bar{p} \Sigma^{+} K_{S}^{0}$ and $J\!/\...