Analysis of the charmonium-like states X*(3860), X(3872), X(3915), X(3930) and X(3940) according to their strong decay behaviors*Supported by the Fundamental Research Funds for the Central Universities (2016MS133). (April 2018)

• Record Type: Journal Article
• Authors: Yu 于, Guo-Liang 国梁; Wang 王, Zhi-Gang 志刚; Li 李, Zhen-Yu 赈宇
• Is Part Of: Chinese physics C. Volume 42:Number 4(2018:Apr.)
• Publication Date: 2018-04
• Subjects: 3P0 -- strong decay -- charmonia; 13.25.Ft -- 14.40.Lb; Particles (Nuclear physics) -- Periodicals; Nuclear physics -- Periodicals; 539.76
• DOI: 10.1088/1674-1137/42/4/043107
• Languages: English
• ISSNs: 1674-1137

Abstract

Abstract: Inspired by the newly observed state X*(3860), we analyze the strong decay behaviors of some charmonium-like states, X*(3860), X(3872), X(3915), X(3930) and X(3940), with the 3 P 0 model. We carry out our work based on the hypothesis that all of these states are charmonium systems. Our analysis indicates that, as a 0 ++ charmonium state, X*(3860) can reproduce the experimental data. As for X(3872), it can tentatively be interpreted as the mixture of a c c ¯ system and a D ¯ *0 D 0 molecular state. If we consider X(3940) as a 3 1 S 0 state, its total width in the present work is much lower than the experimental result. Thus, the 3 1 S 0 charmonium state seems not to be a good candidate for X(3940). Furthermore, our analysis implies that it is reasonable to assign X(3915) and X(3930) to be the same state, 2 ++ . However, combining our analysis with that in Refs.[14, 71 ], we speculate that X(3915)/X(3930) might also be the mixture of a c c ¯ system and a molecular state.