Analysis of the charmonium-like states X*(3860), X(3872), X(3915), X(3930) and X(3940) according to their strong decay behaviors

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Guo-Liang Yu, Zhi-Gang Wang and Zhen-Yu Li. Analysis of the charmonium-like states X*(3860), X(3872), X(3915), X(3930) and X(3940) according to their strong decay behaviors[J]. Chinese Physics C, 2018, 42(4): 043107. doi: 10.1088/1674-1137/42/4/043107
Guo-Liang Yu, Zhi-Gang Wang and Zhen-Yu Li. Analysis of the charmonium-like states X*(3860), X(3872), X(3915), X(3930) and X(3940) according to their strong decay behaviors[J]. Chinese Physics C, 2018, 42(4): 043107.  doi: 10.1088/1674-1137/42/4/043107 shu
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Received: 2017-12-27
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    Supported by the Fundamental Research Funds for the Central Universities (2016MS133)

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Analysis of the charmonium-like states X*(3860), X(3872), X(3915), X(3930) and X(3940) according to their strong decay behaviors

    Corresponding author: Guo-Liang Yu,
    Corresponding author: Zhi-Gang Wang,
  • 1.  Department of Mathematics and Physics, North China Electric Power University, Baoding 071003, China
  • 2.  School of Physics and Electronic Science, Guizhou Normal College, Guiyang 550018, China
Fund Project:  Supported by the Fundamental Research Funds for the Central Universities (2016MS133)

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 3P0 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 m cc system and a D*0D0 molecular state. If we consider X(3940) as a 31S0 state, its total width in the present work is much lower than the experimental result. Thus, the 31S0 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 m cc system and a molecular state.

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