2012

Understanding the property of $\eta(1405/1475)$ in the $J/\psi$ radiative decay

Wu, Xiao-Gang, Wu, Jia-Jun, Zhao, Qiang et al.

Understand

In this work we make a systematic analysis of the correlated processes $J/\psi\to \gamma \eta(1440)/f_1(1420)$ with $\eta(1440)/f_1(1420)\to K\bar{K}\pi$, $\eta\pi\pi$ and $3\pi$, where the role played by the so-called "triangle singularity mechanism" (TSM) is clarified.

  • Our results agree well with the experimental data and suggest a small fraction of $f_1(1420)$ contributions in these processes.
  • This study confirms our conclusion in [Phys.
  • Rev.

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Then

  • H.-B. Li (BESIII Collaboration) (2011), eprint 1108.5789

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    Later among the works it cites.

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