Determination of spin-parity quantum numbers of X(2370) as $0^{-+}$ from $J/\psi \to \gamma K_S^0{K}_S^0{\eta }^{\prime }$

Abstract

Based on $(10087\pm 44)\times 10^6$ $J/\psi$ events collected with the BESIII detector, a partial wave analysis of the decay $J/\psi \to \gamma K_S^0{K}_S^0{\eta }^{\prime }$ is performed. The mass and width of the $X(2370)$ are measured to be $2395\pm 11(\mathrm{stat}{)}_{-94}^{+26}(\mathrm{syst})\mathrm{MeV}/c^2$ and $188_{-17}^{+18}(\mathrm{stat}{)}_{-33}^{+124}(\mathrm{syst})\mathrm{MeV}$, respectively. The corresponding product branching fraction is $\mathcal{B}[J/\psi \to \gamma X(2370)]\times \mathcal{B}[X(2370)\to f_0(980){\eta }^{\prime }]\times \mathcal{B}[f_0(980)\to K_S^0{K}_S^0]=\left(1.31\pm 0.22(\mathrm{stat}{)}_{-0.84}^{+2.85}(\mathrm{syst})\right)\times 10^{-5}$. The statistical significance of the $X(2370)$ is greater than $11.7\sigma$ and the spin-parity is determined to be $0^{-+}$ for the first time. The measured mass and spin-parity of the $X(2370)$ are consistent with the predictions of the lightest pseudoscalar glueball.

arXiv comment8 pages, 2 figures

References in corpus (32)

• Design and Construction of the BESIII Detector
• The glueball spectrum from an anisotropic lattice study
• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• Glueball Spectrum and Matrix Elements on Anisotropic Lattices
• A comprehensive lattice study of SU(3) glueballs
• Resonances in $J/\psi \to \varphi {\pi }^{+}{\pi }^{-}$ and $\varphi K^{+}{K}^{-}$
• Method for detector description transformation to Unity and application in BESIII
• Search for hadronic transition ${\chi }_{cJ}\to {\eta }_c{\pi }^{+}{\pi }^{-}$ and observation of ${\chi }_{cJ}\to K\bar{K}\pi \pi \pi$
• The Experimental Status of Glueballs
• Towards the glueball spectrum from unquenched lattice QCD
• Branching fraction measurements of χ_{c0} and χ_{c2} to π^0π^0 and ηη
• Confirmation of the X(1835) and observation of the resonances X(2120) and X(2370) in J/psi->gamma pi^+pi^-eta'
• Determining the Gluonic Content of Isoscalar Mesons
• Number of $J/\psi$ events at BESIII
• Analysis of the resonant components in Bs->J/ψπ+π-
• Decay of the pseudoscalar glueball into scalar and pseudoscalar mesons
• Categorizing resonances X(1835), X(2120) and X(2370) in the pseudoscalar meson family
• Observation of an anomalous line shape of the ${\eta }^{\prime }{\pi }^{+}{\pi }^{-}$ mass spectrum near the $p\bar{p}$ mass threshold in $J/\psi \to \gamma {\eta }^{\prime }{\pi }^{+}{\pi }^{-}$
• Observation and Spin-Parity Determination of the $X(1835)$ in $J/\psi \to \gamma K_S^0{K}_S^0\eta$
• Precision Study of ${\eta }^{\prime }\to \gamma {\pi }^{+}{\pi }^{-}$ Decay Dynamics
• Radiative Decay of Vector Quarkonium: Constraints on Glueballs and Light Gluinos
• Study of the pseudoscalar glueball in $J/\psi$ radiative decays
• Search for a light exotic particle in J/psi radiative decays
• $S$- and $P$-wave fully-strange tetraquark states from QCD sum rules
• $X(1835)$ and the New Resonances $X(2120)$ and $X(2370)$ Observed by the BES Collaboration
• Observation of the $X(2370)$ and search for the $X(2120)$ in $J/\psi \to \gamma K\bar{K}{\eta }^{\prime }$
• Observation of a state $X(2600)$ in the ${\pi }^{+}{\pi }^{-}{\eta }^{\prime }$ system in the process $J/\psi \to \gamma {\pi }^{+}{\pi }^{-}{\eta }^{\prime }$
• Observation of a near-threshold enhancement in the $\Lambda \bar{\Lambda }$ mass spectrum from $e^{+}{e}^{-}\to \varphi \Lambda \bar{\Lambda }$ at $\sqrt{s}$ from 3.51 to 4.60 GeV
• X(1835), X(2120) and X(2370) in a flux tube model
• Potential higher radial excitations in the light pseudoscalar meson family
• The Glueball content of ${\eta }_c$
• Observation of ${\eta }_c\to \omega \omega$ in $J/\psi \to \gamma \omega \omega$

Cited by in corpus (14)

• Gluon mass scale through the Schwinger mechanism
• Ordinary and exotic mesons in the extended Linear Sigma Model
• Towards scalable bound-to-resonance extrapolations for few- and many-body systems
• Dispersive analysis of excited glueball states
• Exclusive photon-fusion production of even-spin resonances and exotic QED atoms in high-energy hadron collisions
• X(2370) glueball-like particle productions in $e^{+}{e}^{-}$ collisions at the BESIII energy and in pp collisions at the LHC energy with PACIAE model
• Observation of the Electromagnetic Dalitz Transition $h_c\to e^{+}{e}^{-}{\eta }_c$
• Algorithms for partial wave amplitudes under covariant $L$-$S$ scheme
• S-wave flavor-singlet meson mixing in QCD with light and charm quarks
• Casimir scaling in glueballs in SU($N$) and Sp($2N$) gauge theories: hints from constituent approaches
• Asymptotic Freedom and Vacuum Polarization Determine the Astrophysical End State of Relativistic Gravitational Collapse: Quark--Gluon Plasma Star Instead of Black Hole
• q-Deformed glueballs spectrum in AdS/QCD correspondence
• Amplitude Analysis of the Isospin-Violating Decay $J/\psi \to \gamma \eta {\pi }^0$
• SU(3) Gauge Symmetry: An Experimental Review of Diffractive Physics in e+p, p+p, p+A, and A+A Collision Systems