Study of the process $e^{+}{e}^{-}\to \varphi \eta$ at center-of-mass energies between 2.00 and 3.08 GeV

Abstract

The process $e^{+}{e}^{-}\to \varphi \eta$ is studied at 22 center-of-mass energy points ($\sqrt{s}$) between 2.00 and 3.08 GeV using 715 pb${}^{-1}$ of data collected with the BESIII detector. The measured Born cross section of $e^{+}{e}^{-}\to \varphi \eta$ is found to be consistent with {\textsl{BABAR}} measurements, but with improved precision. A resonant structure around 2.175 GeV is observed with a significance of 6.9$\sigma$ with mass ($2163.5\pm 6.2\pm 3.0$) MeV/$c^2$ and width ($31.1_{-11.6}^{+21.1}\pm 1.1$) MeV, where the first uncertainties are statistical and the second are systematic.

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• Study on the strong decays of $\varphi (2170)$ and a grand expectation for the future charm-tau factory
• Nature of the vector resonance $Y(2175)$
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• Measurement of the Born cross sections for $e^{+}{e}^{-}\to {\eta }^{\prime }{\pi }^{+}{\pi }^{-}$ at center-of-mass energies between $2.00$ and $3.08$ GeV
• Vector mesons and electromagnetic form factor of the $\Lambda$ hyperon
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• Search for a strangeonium-like structure $Z_s$ decaying into $\varphi \pi$ and a measurement of the cross section $e^{+}{e}^{-}\to \varphi \pi \pi$
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• Measurement of the integrated luminosity and the center-of-mass energy of the data taken by BESIII at $\sqrt{s}=2.125$ GeV
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Cited by in corpus (9)

• $S$- and $P$-wave fully-strange tetraquark states from QCD sum rules
• Light unflavor vector meson spectroscopy around the mass range of $2.4\sim 3$ GeV and possible experimental evidence
• Electromagnetic form factors of $\Lambda$ hyperon in the vector meson dominance model and a possible explanation of the near-threshold enhancement of the $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$ reaction
• Cross section measurement of $e^{+}{e}^{-}\to K_S^0{K}_L^0$ at $\sqrt{s}=2.00-3.08\mathrm{GeV}$
• The role of the $\omega (4S)$ and $\omega (3D)$ states in mediating the $e^{+}{e}^{-}\to \omega \eta$ and $\omega {\pi }^0{\pi }^0$ processes
• Understanding oscillating features of the timelike nucleon electromagnetic form factors within the extending vector meson dominance model
• Natural explanation of recent results on $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$
• Role of $4S$-$3D$ mixing in explaining the $\omega$-like $Y(2119)$ observed in $e^{+}{e}^{-}\to \rho \pi$ and $\rho (1450)\pi$
• Study of $e^{+}{e}^{-}\to \eta \varphi$ via Initial State Radiation at Belle