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arXiv · 1805.06100

A possible partner state of the $Y(2175)$

Hua-Xing Chen·Cheng-Ping Shen·Shi-Lin Zhu
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Abstract

We study the $Y(2175)$ using the method of QCD sum rules. There are two independent $ss\bar s\bar s$ interpolating currents with $J^{PC} = 1^{--}$, and we calculate both their diagonal and off-diagonal correlation functions. We obtain two new currents which do not strongly correlate to each other, so they may couple to two different physical states: one of them couples to the $Y(2175)$, while the other may couple to another state whose mass is about $71 ^{+172}_{-~48}$ MeV larger. Evidences of the latter state can be found in the BaBar, BESII, Belle, and BESIII experiments.

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Hua-Xing Chen, Cheng-Ping Shen, Shi-Lin Zhu. 2018-05-16. A possible partner state of the $Y(2175)$. https://doi.org/10.1103/physrevd.98.014011

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