e^+e^- Annihilations into Quasi-two-body Final States at 10.58 GeV

TL;DR

This paper reports the first observation of certain positive C-parity hadronic states produced in electron-positron annihilations at 10.58 GeV, supporting two-virtual-photon production mechanisms.

Contribution

It presents the first observation of $e^+e^-$ annihilations into positive C-parity hadronic states and provides angular distribution analysis supporting two-virtual-photon production.

Findings

First observation of $e^+e^-$ into $ ho^0 ho^0$ and $ ho^0$

Angular distributions support two-virtual-photon production

Preliminary results on $e^+e^- o ho^+ ho^-$

Abstract

We report the first observation of $e^+e^-$ annihilations into hadronic states of positive $C$-parity, $\rho^0 \rho^0$ and $\phi\rho^0$. The angular distributions support two-virtual-photon annihilation production. We also report the observations of $e^+e^-\to \phi\eta$ and a preliminary result on $e^+e^-\to \rho^+\rho^-$.