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arXiv · 2212.02218

Explanation of Y(4630) as hadronic resonant state

Xiao-Hui Mei·Zhuo Yu·Mao Song·Jian-You Guo·Gang Li·Xuan Luo
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Abstract

After Y(4630) is discovered, theorists have given various explanations. We find that if Y(4630) is interpreted as the D-wave resonant state of $\Lambda_c \bar {\Lambda}_c$ system, the particle mass, decay width and all quantum numbers are consistent with experimental observations. We use the Bonn approximation to get the interaction potential of one boson exchange model, then extend the complex scaling method (CSM) to calculate the bound and resonant states. The results indicate that the $\Lambda_c \bar{\Lambda}_c$ system can form not only the bound state of S wave, but also the resonant state of the high angular momentum, and the $^3D_1$ wave resonant state can explain the structure of Y(4630) very well.

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Xiao-Hui Mei, Zhuo Yu, Mao Song, Jian-You Guo, Gang Li, Xuan Luo. 2022-12-05. Explanation of Y(4630) as hadronic resonant state. https://doi.org/10.1088/1674-1137%2Faca959

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