Study of $e^{+}{e}^{-}\to \hat{I}\cdot \ddot{I}•$ at center-of-mass energies from 3.773 to 4.600 GeV

Abstract

We present a study of the process $e^{+}{e}^{-}\to \hat{I}\cdot \ddot{I}•$ using data samples collected with the BESIII detector corresponding to an integrated luminosity of 15.03 fb${}^{-1}$ at 23 center-of-mass energies from 3.773 to 4.600 GeV. The Born cross sections are measured at each energy and a coherent fit to cross-section lineshape is performed using a Breit-Wigner parametrization to search for charmonium-like vector states. No significant signals of the $Y(4230)$ and $Y(4360)$ resonances are observed.

11 pages, 5(8) figures