Exotic vector charmonium and its leptonic decay width

分类： 物理学 >> 核物理学 提交时间： 2016-09-02

Ying Chen Wei-Feng Chiu Ming Gong Long-Cheng Gui Zhaofeng Liu

摘要： We propose a novel type of interpolating field operators, which manifests the hybrid-like configuration that the charm quark-antiquark pair recoils against gluonic degrees of freedom. A heavy vector charmonium-like state with a mass of 4.33(2)GeV is disentangled from the conventional charmonium states in the quenched approximation. This state has affinity for the hybrid-like operators but couples less to the relevant quark bilinear operator. We also try to extract its leptonic decay constant and give a tentative upper limit that it is less than one tenth of that of J/ψ, which corresponds to a leptonic decay width about dozens of eV. The connection of this state with X(4260) is also discussed.

同行评议状态:待评议

 点击量 1225  下载量 605  评论