Cross sections measurement of $e^{+}{e}^{-}\to \hat{I}ž(1530{)}^0\bar{\hat{I}}{ž}^0+c.c.$ and search for $\ddot{I}ˆ(3770)\to \hat{I}ž(1530{)}^0\bar{\hat{I}}{ž}^0+c.c.$

Abstract

Using $e^{+}{e}^{-}$ collision data collected with the BESIII detector corresponding to an integrated luminosity of 44.2 fb${}^{-1}$, we measure the Born cross sections for the process $e^{+}{e}^{-}\to \hat{I}ž(1530{)}^0\bar{\hat{I}}{ž}^0+c.c.$ at forty-eight center-of-mass energies between 3.51 and 4.95 GeV. The potential signal from non-$D\bar{D}$ decays for $\ddot{I}ˆ(3770)$, i.e. $\ddot{I}ˆ(3770)\to \hat{I}ž(1530{)}^0\bar{\hat{I}}{ž}^0+c.c.$, is investigated by fitting the dressed cross section, no obvious signal is found. The upper limit of $\mathcal{B}(\ddot{I}ˆ(3770)\to \hat{I}ž(1530{)}^0\bar{\hat{I}}{ž}^0$) at 90\% confidence level is given.

9 Pages, 6 figures