Search for the decay ω→ηe+ e- in η→π+ π- π0 decay mode with the CMD-3 detector

A set of  selection criteria has been elaborated using Monte-Carlo modeling  simulation (MC) via ROOT data analysis program to extract the ω→ηe+e-  decay events. Using a data sample of 6 pb-1 collected in 3 central points in the energy range close to ω-meson invariant mass the upper limit on the branching ratio of decay has been estimated: B(ω→ηe+e-) < 5 ∙ 10-6, which does not contradict to the Vector Dominance Model (VDM) prediction: (2.0 – 4.8) ∙ 10-6.