Newly observed $a_0(1817)$ as the scaling point of constructing the scalar meson spectroscopy

Abstract

Stimulated by the newly observed $a_0(1817)$ by the BESIII Collaboration, we find a perfect Regge trajectory composed of the $a_0(980)$, $a_0(1450)$, and $a_0(1817)$, which leads us to categorize the $a_0(980)$, $a_0(1450)$, and $a_0(1817)$ into the isovector scalar meson family. This scenario is supported by their two-body Okubo-Zweig-Iizuka allowed strong decay behaviors. In this scheme, we also predict the third radial excitation of the $a_0(980)$, which is denoted as the $a_0(2115)$, accessible at future experiment as a direct test of this assignment. We find another Regge trajectory which contains three isoscalar scalar states $f_0(980)$, $X(1812)$, and $f_0(2100)$. We investigate their two-body Okubo-Zweig-Iizuka allowed strong decay patterns, which are roughly consistent with the experimental data. The $f_0(980)$, $X(1812)$, and $f_0(2100)$ can be well grouped into the isoscalar scalar meson family. We want to emphasize that these two Regge trajectories have a similar slope. In summary, the present work provides a scheme of constructing the scalar meson family based on these reported scalar states. The possibility of the $f_0(1710)$ as the candidate of the scalar glueball cannot be excluded by the observation of the $a_0(1817)$ since the $a_0(1817)$ is more suitable as the isovector partner of the $X(1812)$.

8 pages, 4 figures. Accepted by Phys. Rev. D

References in corpus (23)

• Pentaquark and Tetraquark states
• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• The Status of Glueballs
• Is f0(1710) a glueball?
• Scalar Glueball, Scalar Quarkonia, and their Mixing
• Charmed-strange mesons revisited: mass spectra and strong decays
• High statistics study of f_0(980) resonance in gamma gamma --> pi^+ pi^- production
• High-statistics measurement of neutral-pion pair production in two-photon collisions
• High-statistics measurement of neutral-pion pair production in two-photon collisions
• Scalar Glueball in Radiative $J/\psi$ Decay on Lattice
• Newly observed D_{sJ}(3040) and the radial excitations of P-wave charmed-strange mesons
• Newly observed D(2550), D(2610), and D(2760) as 2S and 1D charmed mesons
• Re-analysis of data on a0(1450) and a0(980)
• The mass spectrum and strong decays of isoscalar tensor mesons
• Light axial vector mesons
• Light meson spectroscopy from Dalitz plot analyses of ${\eta }_c$ decays to ${\eta }^{\prime }{K}^{+}{K}^{-}$, ${\eta }^{\prime }{\pi }^{+}{\pi }^{-}$, and $\eta {\pi }^{+}{\pi }^{-}$ produced in two-photon interactions
• Singlet-octet-glueball mixing of scalar mesons
• Pseudotensor meson family
• Light Quark Resonances in pbar p Annihilations at 5.2 GeV/c
• Partial wave analysis of $J/\psi \to \gamma {\eta }^{\prime }{\eta }^{\prime }$
• High-spin mesons below 3 GeV
• Study of Unflavored Light Mesons with $J^{PC}=2^{--}$
• Phenomenological study of the isovector tensor meson family

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• Anomalous interactions between mesons with nonzero spin and glueballs
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• From well-known tensor mesons to yet unknown axial-tensor mesons
• Traces of the new $a_0(1780)$ resonance in the $J/\psi \to \varphi K^{+}{K}^{-}(K^0{\bar{K}}^0)$ reaction
• Strong decays of $a_0$, $f_0$, $f_2$, and $K_2^{\ast }$ resonances as dynamically generated states of two vector mesons
• Likelihood analysis of the newly observed $f_0(2020)$, $f_0(2330)$, and $f_0(2470)$ in $J/\psi \to \gamma {\eta }^{\prime }{\eta }^{\prime }$ as high-lying unflavored scalar mesons
• Role of $a_0(1710)$ in the $J/\psi \to {\rho }^{+}{\rho }^{-}\omega$ and $J/\psi \to \gamma {\rho }^0\omega$ reactions