The phenomenology of the exotic hybrid nonet with ${\pi }_1(1600)$ and ${\eta }_1(1855)$

Abstract

We study the decays of the $J^{PC}=1^{-+}$ hybrid nonet using a Lagrangian invariant under the flavor symmetry, parity reversal, and charge conjugation. We use the available experimental data, the lattice predictions, and the flavor constraints to evaluate the coupling strengths of the ${\pi }_1(1600)$ to various two-body mesonic states. Using these coupling constants, we estimate the partial widths of the two-body decays of the hybrid pion, kaon and the isoscalars. We find that the hybrid kaon can be nearly as broad as the ${\pi }_1(1600)$. Quite remarkably, we find also that the light isoscalar must be significantly narrow while the width of the heavy isoscalar can be matched to the recently observed ${\eta }_1(1855)$.

8 pages

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Cited by in corpus (21)

• An updated review of the new hadron states
• $1^{-+}$ Hybrid in $J/\psi$ Radiative Decays from Lattice QCD
• Constructing the $J^{P(C)}=1^{-(+)}$ light flavor hybrid nonet with the newly observed ${\eta }_1(1855)$
• On the ${\eta }_1(1855)$, ${\pi }_1(1400)$ and ${\pi }_1(1600)$ as dynamically generated states and their SU(3) partners
• Radiative production and decays of the exotic ${\eta }_1^{\prime }(1855)$ and its siblings
• Light double-gluon hybrid states from QCD sum rules
• Anomalous interactions between mesons with nonzero spin and glueballs
• Ordinary and exotic mesons in the extended Linear Sigma Model
• Predictions of the hybrid mesons with exotic quantum numbers $J^{PC}=2^{+-}$
• Revealing the inner structure of the newly observed ${\eta }_1(1855)$ via photoproduction
• Investigating ${\eta }_1^{\prime }(1855)$ exotic states in $J/\psi \to {\eta }_1^{\prime }(1855){\eta }^{(\prime )}$ decays
• Mixing angle of $K_1(1270/1400)$ and the $K{\bar{K}}_1(1400)$ molecular interpretation of ${\eta }_1(1855)$
• Investigating hybrid mesons with $0^{+-}$ and $2^{+-}$ exotic quantum numbers
• Decay properties of light $1^{-+}$ hybrids
• Light tetraquark states with exotic quantum numbers $J^{PC}=2^{+-}$
• Proper constituent gluon mass as the final piece to construct hybrid mesons
• The hybrid nonet of ${\pi }_1(1600)$ and ${\eta }_1(1855)$: analysis and predictions for the kaonic members
• Mass spectrum of the hidden-charm hybrid states via the QCD sum rules
• Revisit the heavy quarkonium double-gluon hybrid mesons with exotic quantum numbers
• Systematic study of exotic $1^{-+}$ tetraquark spectroscopy
• Conventional mesons below 2 GeV