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XVIII International Conference on Hadron Spectroscopy and Structure (HADRON2019)

16–21 Aug 2019
Guilin Bravo Hotel, Guilin, China
Asia/Shanghai timezone

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

20 Aug 2019, 09:55
20m
Golden Cassia (Guilin Bravo Hotel, Guilin, China)

Golden Cassia

Guilin Bravo Hotel, Guilin, China

14 South Ronghu Road, Xiangshan, Guilin 541002, Guangxi, China
Parallel Session 1: Meson spectroscopy Session 1: Meson spectroscopy

Speaker

Wei Chen (Sun Yat-Sen University)

Description

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).

Primary author

Wei Chen (Sun Yat-Sen University)

Presentation materials

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