Observation of Three Charmoniumlike States with $J^{PC}=1^{--}$ in $e^{+}{e}^{-}\to D^{\ast 0}{D}^{\ast -}{\pi }^{+}$

Abstract

The Born cross sections of the process $e^{+}{e}^{-}\to D^{\ast 0}{D}^{\ast -}{\pi }^{+}$ at center-of-mass energies from 4.189 to 4.951 GeV are measured for the first time. The data samples used correspond to an integrated luminosity of $17.9{\mathrm{fb}}^{-1}$ and were collected by the BESIII detector operating at the BEPCII storage ring. Three enhancements around 4.20, 4.47 and 4.67 GeV are visible. The resonances have masses of $4209.6\pm 4.7\pm 5.9\mathrm{MeV}/c^2$, $4469.1\pm 26.2\pm 3.6\mathrm{MeV}/c^2$ and $4675.3\pm 29.5\pm 3.5\mathrm{MeV}/c^2$ and widths of $81.6\pm 17.8\pm 9.0\mathrm{MeV}$, $246.3\pm 36.7\pm 9.4\mathrm{MeV}$, and $218.3\pm 72.9\pm 9.3\mathrm{MeV}$, respectively, where the first uncertainties are statistical and the second systematic. The first and third resonances are consistent with the $\psi (4230)$ and $\psi (4660)$ states, respectively, while the second one is compatible with the $\psi (4500)$ observed in the $e^{+}{e}^{-}\to K^{+}{K}^{-}J/\psi$ process. These three charmoniumlike $\psi$ states are observed in $e^{+}{e}^{-}\to D^{\ast 0}{D}^{\ast -}{\pi }^{+}$ process for the first time.

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• Colloquium: Hadron Production in Open-charm Meson Pair at $e^{+}{e}^{-}$ Collider
• $e^{+}{e}^{-}\to {\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$ cross sections and the ${\Lambda }_c^{+}$ electromagnetic form factors within the extended vector meson dominance model
• Resonance parameters of the vector charmoniumlike state $G(3900)$
• The ground states and first radial excitations of the vector tetraquark states with explicit P-waves via the QCD sum rules
• Observation of Three Resonant Structures in the Cross Section of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{h}_c$
• Measurement of Born cross section of $e^{+}{e}^{-}\to {\Sigma }^0{\bar{\Sigma }}^0$ at $\sqrt{s}=3.50-4.95$ GeV
• Cross section measurement of $e^{+}{e}^{-}\to \eta \psi (2S)$ and search for $e^{+}{e}^{-}\to \eta \tilde{X}(3872)$
• Three-body strong decays of the $Y(4230)$ via the light-cone QCD sum rules
• Search for the leptonic decays $D^{\ast +}\to e^{+}{\nu }_e$ and $D^{\ast +}\to {\mu }^{+}{\nu }_{\mu }$
• Discovery of XYZ particles at the BESIII Experiment
• Search for $e^{+}{e}^{-}\to \varphi {\chi }_{c0}$ and $\varphi {\eta }_{c2}(1D)$ at center-of-mass energies from 4.47 to 4.95 GeV