Abstract
In this talk, we present the recent study on the charmonium-like states from the BESIII Collaboration based on large data samples above D ¯ D threshold. The observation of X(3872) from the Y(4260) radiative transition, the study of the Y states from the e + e − → π + π − hc process, and the observation of the charged Zc states are included .
Highlights
Starting from B-factories, new states with characteristics different from conventional mesons are observed in the final states with a charmonium and some light hadrons
From the end of 2012, the experiment accumulated a lot of data around the peaks of the vector charmonium resonances above 4.0 GeV at 14 energy points [2], making possible a study of the charmonium-like states
We present the recent results from the BESIII experiment about the X(3872) from a radiative transition of Y(4260), the Y states from e+e− annihilation, and the charged Zc states
Summary
Starting from B-factories, new states with characteristics different from conventional mesons are observed in the final states with a charmonium and some light hadrons. From the end of 2012, the experiment accumulated a lot of data around the peaks of the vector charmonium resonances above 4.0 GeV at 14 energy points [2], making possible a study of the charmonium-like states. In this talk, we present the recent results from the BESIII experiment about the X(3872) from a radiative transition of Y(4260), the Y states from e+e− annihilation, and the charged Zc states. The measured relatively large decay width near 4.260 GeV is partly similar to model dependent calculations in Ref. [12]
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