Nature of $X(2370)$

Abstract

We address the nature of the $X(2370)$ resonance observed in the $J/\psi$ radiative decays, $J/\psi \to \gamma K^{+}{K}^{-}{\eta }^{\prime }$, $J/\psi \to \gamma K_S{K}_S{\eta }^{\prime }$ and $J/\psi \to \gamma {\pi }^{+}{\pi }^{-}{\eta }^{\prime }$. By studying the invariant mass spectra we confirm that decays of the $X(2370)$ into three pseudo-scalars are well described by an effective chiral Lagrangian. We extract the branching ratio of $J/\psi \to X(2370)\gamma$ and show that it is an order of magnitude larger compared to the glueball production rate predicted by lattice QCD. This indicates that $X(2370)$ is not likely to be a glueball candidate.

5 pages, 2 figures, to be the same as the published version

References in corpus (14)

• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• The Status of Glueballs
• Towards the glueball spectrum from unquenched lattice QCD
• Comprehensive Amplitude Analysis of $\gamma \gamma \to {\pi }^{+}{\pi }^{-},{\pi }^0{\pi }^0$ and $\overline{K}K$ below 1.5 GeV
• Decay of the pseudoscalar glueball into scalar and pseudoscalar mesons
• Scalar isoscalar mesons and the scalar glueball from radiative $J/\psi$ decays
• eta(1405) in a chiral approach based on mixing of the pseudoscalar glueball with the first radial excitations of eta and eta'
• Unified study of $J/\psi \to PV$, $P{\gamma }^{(\ast )}$ and light hadron radiative processes
• Witten-Veneziano mechanism and pseudoscalar glueball-meson mixing in holographic QCD
• Two and Three Pseudoscalar Production in $e^{+}{e}^{-}$ annihilation and their contributions to $(g-2{)}_{\mu }$
• Understanding the radiative decays of vector charmonia to light pseudoscalar mesons
• Search for the $X(2370)$ and observation of ${\eta }_c\to \eta \eta {\eta }^{\prime }$ in $J/\psi \to \gamma \eta \eta {\eta }^{\prime }$
• Spinless mesons and glueballs mixing patterns in SU(3) flavor limit
• Scalar and tensor resonances in $J/\psi$ radiative decays

Cited by in corpus (2)

• An updated review of the new hadron states
• $S$- and $P$-wave fully-strange tetraquark states from QCD sum rules