Observation of the first iso-spin Charmonium-like State $Z_c(4020)$ }
High Energy Physics - Experiment
2016-02-17 v1
Abstract
In this paper, we present a new experimental progress in brief on the recent observation of the charged charmonium-like state Z_c(4020)^{+/-} states and its iso-spin partner Z_c(4020)^{0} in pi pi hc process at the BESIII experiment. The charged Z_{c}(4020) is its decay into \pi^{+/-} hc final state, and carries electric charge, thus it contains at least four quarks. The observation of both charge and neutral state makes Z_{c}(4020) the first iso-spin triplet Z_{c} state observed in experiment.
Cite
@article{arxiv.1504.02631,
title = {Observation of the first iso-spin Charmonium-like State $Z_c(4020)$ }},
author = {Qing-Ping Ji and Yu-Ping Guo and Ai-Qiang Guo and Chun-Xu Yu and Zhi-Yong Wang},
journal= {arXiv preprint arXiv:1504.02631},
year = {2016}
}
Comments
5 pages, 7 figures