Recent Results of $\psi(2S)$ Decays from BES

TL;DR

This paper reports recent experimental results on $psi(2S)$ decays, including hadronic decay measurements, radiative/hadronic transition observations, and searches for specific decay modes, advancing understanding of charmonium states.

Contribution

It provides new measurements and preliminary results on $psi(2S)$ decay channels and transition processes from BES, contributing to charmonium decay studies.

Findings

Measurement of $ ext{BR}( ext{J/}psi o K^0_S K^0_L)$

Preliminary search results for $psi(3770) o ho \u03C0$

Observation of various $psi(2S)$ hadronic decays

Abstract

Results of many $\psi(2S)$ hadronic decays and the results of $\psi(2S)$ radiative/hadronic transitions from BES collaboration in the past year are presented. Measurement of $\BR(\jpsi\ra K^0_S K^0_L)$ and the preliminary result of searching for the decay $\psi(3770)\ra\rho\pi$ are also reported.