Precise measurement of the $e^{+}{e}^{-}\to D_s^{+}{D}_s^{-}$ cross sections at center-of-mass energies from threshold to 4.95 GeV

Abstract

Using the $e^{+}{e}^{-}$ collision data collected with the BESIII detector operating at the BEPCII collider, at center-of-mass energies from the threshold to $4.95$~GeV, we present precise measurements of the cross sections for the process $e^{+}{e}^{-}\to D_s^{+}{D}_s^{-}$ using a single tag method. The resulting cross section lineshape exhibits several new structures, thereby offering an input for coupled channel analysis and model tests, which are critical to understand vector charmonium-like states with masses between 4 and 5~GeV.

9 pages, 4 figures, published to PRL