Cross sections measurement of $e^+e^-\to \Xi(1530)^0\bar\Xi^0 + c.c.$ and search for $\psi(3770)\to\Xi(1530)^0\bar\Xi^0 + c.c.$

TL;DR

This study measures the cross sections of $e^+e^-$ collisions producing $ ext{Xi}(1530)^0$ and $ar{ ext{Xi}}^0$ particles across various energies and searches for non-$Dar{D}$ decay modes of $ ext{psi}(3770)$, finding no significant signal.

Contribution

First measurement of the cross sections for $e^+e^- o ext{Xi}(1530)^0 ar{ ext{Xi}}^0$ over a wide energy range and the first search for $ ext{psi}(3770)$ decays into this final state.

Findings

No significant $ ext{psi}(3770)$ decay signal observed.

Upper limit on $ ext{psi}(3770) o ext{Xi}(1530)^0 ar{ ext{Xi}}^0$ branching fraction.

Cross sections measured at 48 energies between 3.51 and 4.95 GeV.

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 $e^+e^- \to \Xi(1530)^{0} \bar{\Xi}^{0} + c.c.$ at forty-eight center-of-mass energies between 3.51 and 4.95 GeV. The potential signal from non-$D\bar{D}$ decays for $\psi(3770)$, i.e. $\psi(3770)\to \Xi(1530)^{0} \bar{\Xi}^{0}+ c.c.$, is investigated by fitting the dressed cross section, no obvious signal is found. The upper limit of $\mathcal{B}(\psi(3770) \to \Xi(1530)^{0} \bar{\Xi}^{0}$) at 90\% confidence level is given.