Study of the process [Formula omitted] in the energy range [Formula omitted] GeV with the SND detector

The process [Formula omitted] is studied in the center-of-mass energy range 1.05-2.00 GeV using data with an integrated luminosity of 94.5 [Formula omitted] collected by the SND detector at the VEPP-2000 [Formula omitted] collider. The [Formula omitted] cross section is measured for the first time. It is shown that the dominant mechanism of this reaction is the transition through the [Formula omitted] intermediate state. The measured cross section of the subprocess [Formula omitted] is consistent with previous measurements in the [Formula omitted] mode. It is found, with a significance of [Formula omitted], that the process [Formula omitted] is not completely described by hadronic vector-pseudoscalar intermediate states. The cross section of this missing contribution, which can originate from radiation processes, e. g. [Formula omitted], is measured. It is found to be 15-20 pb in the wide energy range from 1.3 to 1.9 GeV.