Experimental review of e＋e-→ππhc

We review the recent BESIII measurement of e＋e-→ππhc in which its line shape is studied between the center-of-mass energies of 3.9 to 4.42 GeV and an iso-vector charmonium-like state Zc（4020） is observed in the invariant mass of 7rhc at the BESIII experiment. The charged Zc（4020）± is the second obse...

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Bibliographic Details
Published in:中国物理C：英文版 2016 (1), p.17-22
Main Author: 姬清平 郭玉萍 郭爱强 喻纯旭 王至勇
Format: Article
Language:English
Subjects:
变质量
同位旋矢量
实验
数据测量
状态
综述
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Summary:We review the recent BESIII measurement of e＋e-→ππhc in which its line shape is studied between the center-of-mass energies of 3.9 to 4.42 GeV and an iso-vector charmonium-like state Zc（4020） is observed in the invariant mass of 7rhc at the BESIII experiment. The charged Zc（4020）± is the second observed Zc state following Zc（3900）, while the Zc（4020）0 is the first observed neutral Zc state. The line shape of δ（e＋e-→ππhc）is also re-analyzed in view of searching for the Y state and the existence of the Y（4220） state is confirmed and compared with the previous work of the BESIII experiment.
ISSN:1674-1137
0254-3052