Constructing new pseudoscalar meson nonets with the observed $X(2100)$, $X(2500)$, and $\eta (2225)$

Abstract

Stimulated by the BESIII observation of $X(2100)$, $X(2500)$, and $\eta (2225)$, we try to pin down new pseudoscalar meson nonets including these states. The analysis of mass spectra and the study of strong decays indicate that $X(2120)$ and $\eta (2225)$ associated with $\pi (2070)$ and the predicted kaon $K(2150)$ may form a new pseudoscalar meson nonet. In addition, more experimental data for $X(2100)$ are necessary to determine its structure of nonets. Then, $X(2500)$, $X(2370)$, $\pi (2360)$, and the predicted kaon $K(2414)$ can be grouped into another new nonet. These assignments to the discussed pseudoscalar states can be further tested in experiment.

15 pages, 4 tables and 10 figures. More discussions added and typos corrected. Accepted by Phys. Rev. D

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• Prediction for $5^{++}$ mesons
• Potential higher radial excitations in the light pseudoscalar meson family
• Possible Assignment of Excited Light ${}^3{S}_1$ Vector Mesons
• QCD sum rule studies on the $ss\bar{s}\bar{s}$ tetraquark states of $J^{PC}=0^{-+}$
• Studying $X(2100)$ hadronic decays and predicting its pion and kaon induced productions
• Study of Unflavored Light Mesons with $J^{PC}=2^{--}$
• The possible members of the $5^1{S}_0$ meson nonet
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• The role of the $\omega (4S)$ and $\omega (3D)$ states in mediating the $e^{+}{e}^{-}\to \omega \eta$ and $\omega {\pi }^0{\pi }^0$ processes
• Light Pseudoscalar and Axial Spectroscopy using AdS/QCD Modified Soft Wall Model
• Revisiting the tensor $J^{PC}=2^{--}$ meson spectrum
• Possible charmed-strange molecular dibaryons
• Faddeev fixed-center approximation to the $\eta K^{\ast }{\bar{K}}^{\ast }$, $\pi K^{\ast }{\bar{K}}^{\ast }$ and $K{K}^{\ast }{\bar{K}}^{\ast }$ systems
• Construction of Isoscalar $2^{-+}$ Mesonic States Inspired by the $X(2600)$ Discovery