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

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arxiv 1905.10344 v2 pith:ESDQQNQS submitted 2019-05-24 hep-ph hep-exnucl-th

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

Qi Li , Ming-Sheng Liu , Qi-Fang L\"u , Long-Cheng Gui , Xian-Hui Zhong This is my paper
classification hep-ph hep-exnucl-th
keywords upsilonstatesmixedmodelspotentialresonancestrongvector
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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 $\Upsilon(10860)$ and $Y(10750)$ as mixed states via the $S-D$ mixing. Our results suggest that $Y(10750)$ and $\Upsilon(10860)$ might be explained as mixed states between $5S$- and $4D$-wave vector $b\bar{b}$ states. The $Y(10750)$ and $\Upsilon(10860)$ 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 $\Upsilon(11020)$ resonance are consistent with the assignment of the $\Upsilon(6S)$ state in the potential models.

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  1. Hunting for $B\bar B$ molecular state $X_{b0}$ via radiative transition of $\Upsilon(10753)$

    hep-ph 2026-05 unverdicted novelty 4.0

    The decay Υ(10753) → γ X_b0 is predicted to have partial width 0.2-1.5 keV and branching fraction 10^{-6} to 10^{-5} for binding energies 0-10 MeV, dominated by B1(') meson loops.