Recent charmonium decay measurements at BESIII

Le résumé fourni par la source

The BESIII experiment at the BEPCIII storage has accumulated the world's largest data samples in the $\tau$-charm energy region, including 10 billion $J/\psi$ events for the study of light hadrons and hyperons, 2.7 billion $\psi(3686)$ events for charmonium study, 20 $\rm fb^{-1}$ $\psi(3770)$ events for D mesons study, and high luminosity scan for research on XYZ, $D_{s}$, and $\Lambda_{c}$ states. This presentation delves into recent experimental measurements of charmonium decays, including four independent measurements performed at BESIII experiment. The evidence of the $\chi_{c0} \to \Lambda\bar{\Lambda}\phi$ decay, along with the observation of the $\chi_{c1,2} \to \Lambda\bar{\Lambda}\phi$ and $\chi_{c0,1,2} \to \Lambda \bar{\Lambda}\omega$ decays, are firstly reported. The decay $h_{c}\to\gamma\eta$ is observed for the first time, but no significant signal is found for the decay $h_c\to\gamma\pi^{0}$. Additionally, the first search for the radiative transition $\chi_{c1}(3872) \to \gamma \psi_{2}(3823)$ is performed with no significant signal.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.