INTERFERENCE IN THE REACTION E(-)-]GAMMA-PI(+)PI(-) AND SEARCHES FOR THE DECAY PHI-]GAMMA-F(0)-]GAMMA-PI(+)PI(-)()E()

The interference between the amplitudes for the processes e(+)e(-)-->r ho-->gamma pi(+)pi(-) and e(+)e(-)-->phi-->gamma f(0)-->gamma pi(+)pi( -) is considered, f(0) production being described in the four-quark mo del and in the model of scalar <K(K)over bar> molecules. General expre ssions for the differential cross sections are given with allowance fo r radiative corrections and two cutoff angles. Interference patterns a re obtained in the differential cross sections as a function of the ph oton energy and in the total cross section as a function of the beam e nergy.