Is the Y ( 2175 ) a strangeonium hybrid meson?

QCD Gaussian sum rules are used to explore the vector (JPC=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%...

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Bibliographic Details
Published in:Physical review. D 2019-08, Vol.100 (3), p.1, Article 034012
Main Authors: Ho, J., Berg, R., Steele, T. G., Chen, W., Harnett, D.
Format: Article
Language:English
Subjects:
Resonance
Sum rules
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Summary:QCD Gaussian sum rules are used to explore the vector (JPC=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).
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.100.034012