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arXiv · 1905.12779

Is the $Y(2175)$ a Strangeonium Hybrid Meson?

J. Ho·R. Berg·T. G. Steele·W. Chen·D. Harnett
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Abstract

QCD Gaussian sum-rules are used to explore the vector ($J^{PC}=1^{--}$) strangeonium hybrid interpretation of the $Y(2175)$. Using a two-resonance model consisting of the $Y(2175)$ and an additional resonance, we find that the relative resonance strength of the $Y(2175)$ in the Gaussian sum-rules is less than 5\% that of a heavier 2.9 GeV state. This small relative strength presents a challenge to a dominantly-hybrid interpretation of the $Y(2175)$.

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J. Ho, R. Berg, T. G. Steele, W. Chen, D. Harnett. 2019-06-17. Is the $Y(2175)$ a Strangeonium Hybrid Meson?. https://doi.org/10.1103/physrevd.100.034012

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