Search for the scalar a_0 and f_0 mesons in the ϕradiative decays

Abstract

The potentialities of the production of the $a_0$ and $f_0$ mesons in the $ϕ$ radiative decays are considered based on a new two-channel analysis of the $ππ$ scattering in a energy region near 1 GeV. We predict $BR(ϕ\toγf_0(980))\sim10^{-5}-10^{-4}$ that is a great value for the decay forbidden by the Okubo-Zweig-Iizuka rule. We discuss the four-quark, $K\bar K$-molecule and two-quark scenarios for the $a_0$ and $f_0$ mesons. It is presented arguments that the $e^+e^-$-colliders and especially the $ϕ$ factories give the possibility to choose a single one out of them.