Study of resonant structure around 1.8 GeV/$c^2$ and $\eta (1405)$ in $J/\psi \to \omega \eta {\pi }^{+}{\pi }^{-}$

Abstract

We present results of a study of the decay $J/\psi \to \omega \eta {\pi }^{+}{\pi }^{-}$ using a sample of $(225.2\pm 2.8)\times 10^6$ $J/\psi$ events collected by the BESIII detector, and report the observation of a new process of $J/\psi \to \omega X(1870)$ in which X(1870) decays to $a_0(980)\pi$. The statistical significance of this process is larger than $7.2\sigma$. Signals for $J/\psi \to \omega f_1(1285)$ and $J/\psi \to \omega \eta (1405)$ are also observed in $\eta {\pi }^{+}{\pi }^{-}$ spectrum, with statistical significances much larger than $10\sigma$.

6 pages, 7 figures

References in corpus (4)

• Confirmation of the X(1835) and observation of the resonances X(2120) and X(2370) in J/psi->gamma pi^+pi^-eta'
• Study of psi(2S) Decays to gamma p bar{p}, pi^0 p bar{p} and eta p bar{p} and Search for p bar{p} Threshold Enhancements
• Study a0(980)-f0(980) mixing from a0(980) -> f0(980) transition
• Measurement of the Matrix Element for the Decay ${\eta }^{\prime }\to \eta {\pi }^{+}{\pi }^{-}$

Cited by in corpus (16)

• Understanding the property of $\eta (1405/1475)$ in the $J/\psi$ radiative decay
• Study of J/psi->eta phi pi+pi- at BESIII
• The BESIII Physics Programme
• Internal particle width effects on the the triangle singularity mechanism in the study of the $\eta (1405)$ and $\eta (1475)$ puzzle
• Observation of a structure at 1.84 GeV/c${}^2$ in the $3({\pi }^{+}{\pi }^{-})$ mass spectrum in $J/\psi \to \gamma 3({\pi }^{+}{\pi }^{-})$ decays
• A study of $\eta K\bar{K}$ and ${\eta }^{\prime }K\bar{K}$ with the fixed center approximation to Faddeev equations
• Revisiting the pseudoscalar meson and glueball mixing and key issues in the search for pseudscalar glueball state
• $J/\psi \to \gamma {\eta }^{\prime }{\pi }^{+}{\pi }^{-}$ and the structure observed around the $\bar{p}p$ threshold
• Gluonic nature of the newly observed state $X(2600)$
• Three-body unitary coupled-channel approach to radiative $J/\psi$ decays and $\eta (1405/1475)$
• Three-Body Unitary Coupled-Channel Analysis on $\eta (1405/1475)$
• Study of $\psi (3686)\to \omega K\bar{K}\pi$ decays
• Gluon-pair-Creation Production Model of Strong Interaction Vertices
• Measurement of Branching Fractions of $\psi (3686)\to \varphi {\eta }^{\prime },\varphi f_1(1285)$ and $\varphi \eta (1405)$
• Light hadron, Charmonium(-like) and Bottomonium(-like) states
• Observation of the $X(1840)$ at BESIII