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arXiv · 2111.04514

New hadron configuration: The double-gluon hybrid state

Hua-Xing Chen·Wei Chen·Shi-Lin Zhu
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Abstract

This is the first study on the double-gluon hybrid, which consists of one valence quark and one valence antiquark together with two valence gluons. We concentrate on the one with the exotic quantum number $J^{PC} = 2^{+-}$ that conventional $\bar q q$ mesons can not reach. We apply QCD sum rule method to evaluate its mass to be $2.26^{+0.20}_{-0.25}$ GeV, and study its possible decay patterns. Especially, its three-meson decay patterns are generally not suppressed severely compared to two-meson decay patterns, so the $S$-wave three-meson decay channels $f_1\omega\pi/f_1\rho\pi$ can be useful in identifying its nature, which is of particular importance to the direct test of QCD in the low energy sector.

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Hua-Xing Chen, Wei Chen, Shi-Lin Zhu. 2021-11-08. New hadron configuration: The double-gluon hybrid state. https://doi.org/10.1103/physrevd.105.l051501

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