Using data samples collected with the BESIII detector at the BEPCII collider at center-of-mass energies ranging from 3.80 to 4.95 GeV, corresponding to an integrated luminosity of 20 fb$^{ -1}$, a measurement of Born cross sections for the $e^+e^-\to D^{ 0}\bar{ D}^{ 0}$ and $D^{ +}D^{ -}$ processes is presented with unprecedented precision. Many clear peaks in the line shape of $e^+e^-\to D^{ 0}\bar{ D}^{ 0}$ and $D^{ +}D^{ -}$ around the mass range of $G(3900)$, $\psi(4040)$, $\psi(4160)$, $Y(4260)$, and $\psi(4415)$, etc., are foreseen. These results offer crucial experimental insights into the nature of hadron production in the open-charm region.
Categories: hep-ex