New hadron configuration: The double-gluon hybrid state

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 $2.26_{-0.25}^{+0.20}$ 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.

5 pages, 3 figures, 1 table, revised version to be published in PRD

References in corpus (10)

• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• Toward the excited meson spectrum of dynamical QCD
• Hybrid Mesons
• Comparison of $pp$ and $p\bar{p}$ differential elastic cross sections and observation of the exchange of a colorless $C$-odd gluonic compound
• The I^G J^{PC}=1^- 1^{-+} Tetraquark States
• Hybrid meson properties in Lattice QCD and Flux Tube Models
• The I^G J^{PC}=0^+ 1^{-+} Tetraquark State
• Toward the existence of odderon as a three-gluon bound state
• Revisiting the b1 pi and rho pi decay modes of the 1-+ light hybrid state with light-cone QCD sum rules
• Hybrid States from Constituent Glue Model

Cited by in corpus (3)

• An updated review of the new hadron states
• Mass Predictions of Vector ($1^{--}$) Double-gluon Heavy Quarkonium Hybrids from QCD Sum Rules
• Light double-gluon hybrid states from QCD sum rules