Partial Wave Analysis of $J/\psi \to \gamma (K^{\pm }{K}_S^0{\pi }^{\mp })$

Abstract

BES data on $J/\psi \to \gamma (K^{\pm }{K}_S^0{\pi }^{\mp })$ are presented. There is a strong peak due to $\eta (1440)/\iota$, which is fitted with a Breit-Wigner amplitude with $s$-dependent widths for decays to $K^{\ast }K$, $\kappa K$, $\eta \pi \pi$ and $\rho \rho$; $\kappa$ refers to the $K\pi$ S-wave. At a $K\bar{K}\pi$ mass of $\sim 2040$ MeV, there is a second peak with width $\sim 400$ MeV; $J^P=0^{-}$ is preferred over $1^{+}$ and $2^{-}$ respectively by 5.2 and 6.8 standard deviations. It is a possible candidate for a $0^{-}$ $s\bar{s}g$ hybrid partner of $\pi (1800)$.

16 pages, 5 figures and 2 table

References in corpus (2)

• Partial Wave Analysis of $J/\psi \to \gamma ({\pi }^{+}{\pi }^{-}{\pi }^{+}{\pi }^{-})$
• Partial Wave Analysis of $J/\psi \to \gamma (K^{+}{K}^{-}{\pi }^{+}{\pi }^{-})$

Cited by in corpus (17)

• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• Threshold cusps and triangle singularities in hadronic reactions
• Four Sorts of Mesons
• The puzzle of anomalously large isospin violations in $\eta (1405/1475)\to 3\pi$
• One-pion-exchange final-state-interaction and the pbar p near threshold enhancement in J/psi -> gamma pbar p decays
• Isospin breaking and $f_0(980)$-$a_0(980)$ mixing in the $\eta (1405)\to {\pi }^0{f}_0(980)$ reaction
• Understanding the property of $\eta (1405/1475)$ in the $J/\psi$ radiative decay
• Scalar isoscalar mesons and the scalar glueball from radiative $J/\psi$ decays
• Isospin breaking decay $\eta (1405)\to f_0(980){\pi }^0\to 3\pi$
• Excited Scalar and Pseudoscalar Mesons in the Extended Linear Sigma Model
• Measurements of the Mass and Full-Width of the ${\eta }_c$ Meson
• The BES f_0(1810): a new glueball candidate
• Covariant tensor formalism for partial wave analyses of $\psi$ decays into $\gamma B\bar{B}$, $\gamma \gamma V$ and $\psi (2S)\to \gamma {\chi }_{c0,1,2}$ with ${\chi }_{c0,1,2}\to K\bar{K}{\pi }^{+}{\pi }^{-}$ and $2{\pi }^{+}2{\pi }^{-}$
• A Measurement of the Mass and Full-Width of the ${\eta }_c$ Meson
• Strange Quarkonium States at BESIII
• Study of two-photon decays of pseudoscalar mesons via $J/\psi$ radiative decays
• Observation of the radiative decays of ${\rm Y}(1S)$ to ${\chi }_{c1}$