Speaker
Description
In this talk, several searches for charmonium-like states will be presented. They are i) using data samples at CMS energies from threshold to 4.95 GeV collected with the BESIII detector, the cross-sections of process e+e−→D+sD−s are measured, and three structures with masses around 4.19, 4.41, and 4.79 GeV are found; ii) using a data sample corresponding to 2.93/fb collected at a CMS energy of 3.773 GeV with the BESIII detector, a scalar partner of the X(3872), denoted as X(3700) is searched, via ψ(3770)→γηη′ and γπ+π−J/ψ processes. No significant signals are observed, and the upper limits are provided; iii) the Born cross-sections of the process e+e−→D0D−π+ at CMS from 4.189 to 4.951 GeV, using 17.9/fb data collected at BESIII, are measured for the first time. Three enhancements around 4.20, 4.47 and 4.67 GeV are visible, and they are assigned to psi(4230), psi(4500), and psi(4660), respectively.
| Parallel Session | Hadron Spectroscopy |
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