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).
@article{arxiv.1905.12779,
title = {Is the $Y(2175)$ a Strangeonium Hybrid Meson?},
author = {J. Ho and R. Berg and T. G. Steele and W. Chen and D. Harnett},
journal= {arXiv preprint arXiv:1905.12779},
year = {2019}
}