Using data samples corresponding to an integrated luminosity of $0.9~\mathrm{fb}^{-1}$ collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies of $4.84$, $4.92$, and $4.95~\mathrm{GeV}$, we search for the exotic charmoniumlike state with quantum numbers $J^{PC}=0^{--}$, $\psi_0(4360)$, in the process $e^+e^- \to \eta\psi_0(4360)$ with $\psi_0(4360)\to\eta\psi(2S)$. No significant signal of the $\psi_0(4360)$ resonance is observed. Upper limits on $$\sigma(e^+e^- \to \eta\psi_0(4360)) \times \mathcal{B}(\psi_0(4360)\to\eta\psi(2S))$$ and $$\sigma(e^+e^- \to \eta\eta\psi(2S))$$ at the $90\%$ confidence level are determined for each energy point.
Search for 𝜓0(4360) →𝜂𝜓(2𝑆) through the process 𝑒+𝑒− →𝜂𝜂𝜓(2𝑆)
Di Fiore, E.;Garzia, I.;Melendi, F. M.;
2026
Abstract
Using data samples corresponding to an integrated luminosity of $0.9~\mathrm{fb}^{-1}$ collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies of $4.84$, $4.92$, and $4.95~\mathrm{GeV}$, we search for the exotic charmoniumlike state with quantum numbers $J^{PC}=0^{--}$, $\psi_0(4360)$, in the process $e^+e^- \to \eta\psi_0(4360)$ with $\psi_0(4360)\to\eta\psi(2S)$. No significant signal of the $\psi_0(4360)$ resonance is observed. Upper limits on $$\sigma(e^+e^- \to \eta\psi_0(4360)) \times \mathcal{B}(\psi_0(4360)\to\eta\psi(2S))$$ and $$\sigma(e^+e^- \to \eta\eta\psi(2S))$$ at the $90\%$ confidence level are determined for each energy point.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
