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 ΛcΛˉc 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 ΛcΛˉc system can form not only the bound state of S wave, but also the resonant state of the high angular momentum, and the 3D1 wave resonant state can explain the structure of Y(4630) very well.
@article{arxiv.2212.02218,
title = {Explanation of Y(4630) as hadronic resonant state},
author = {Xiao-Hui Mei and Zhuo Yu and Mao Song and Jian-You Guo and Gang Li and Xuan Luo},
journal= {arXiv preprint arXiv:2212.02218},
year = {2023}
}