Speaker
Stefano Spataro
(Istituto Nazionale di Fisica Nucleare)
Description
Using a scan sample taken at center-of-mass energies from 3.773 GeV to 4.95 GeV with an integrated luminosity of 22/fb, the properties of XYZ states are investigated at BESIII. The cross sections of $e^+e^- \to D^{*+} D^{*-}$ and $D^{*+} D^-$, $e^+e^- \to K^+ K^- J/\psi$, $e^+e^- \to \pi^+ \pi^- \psi_2(3823)$, and $e^+e^- \to \Lambda \bar{\Lambda}$ are measured. The new decay modes of $X(3872) \to \pi^0 \chi_c^0$ and $\pi \pi \chi_c^0$ are searched where $X(3872)$ is produced via the process $e^+e^- \to \gamma X(3872)$. Candidates of the hidden-charm tetra quark with strangeness is studied in the process of $e^+e^- \to K^+(D_s^- D^{*0} + D_s^{*-} D^0)$.
| In-person participation | Yes |
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Primary author
Stefano Spataro
(Istituto Nazionale di Fisica Nucleare)
Co-author
Fabrizio Bianchi
(Istituto Nazionale di Fisica Nucleare)
