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arXiv · 1905.10344

Canonical interpretation of $Y(10750)$ and $Υ(10860)$ in the $Υ$ family

Qi Li·Ming-Sheng Liu·Qi-Fang Lü·Long-Cheng Gui·Xian-Hui Zhong
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Abstract

Inspired by the new resonance $Y(10750)$, we calculate the masses and two-body OZI-allowed strong decays of the higher vector bottomonium sates within both screened and linear potential models. We discuss the possibilities of $Υ(10860)$ and $Y(10750)$ as mixed states via the $S-D$ mixing. Our results suggest that $Y(10750)$ and $Υ(10860)$ might be explained as mixed states between $5S$- and $4D$-wave vector $b\bar{b}$ states. The $Y(10750)$ and $Υ(10860)$ resonances may correspond to the mixed states dominated by the $4D$- and $5S$-wave components, respectively. The mass and the strong decay behaviors of the $Υ(11020)$ resonance are consistent with the assignment of the $Υ(6S)$ state in the potential models.

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Qi Li, Ming-Sheng Liu, Qi-Fang Lü, Long-Cheng Gui, Xian-Hui Zhong. 2019-06-16. Canonical interpretation of $Y(10750)$ and $Υ(10860)$ in the $Υ$ family. https://doi.org/10.1140/epjc%2Fs10052-020-7626-2

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