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ISSN - 10637788, EISSN - 1562692X, Physics of Atomic Nuclei, 1997, vol. 60, p. 1152-1163

Interference in the reaction e+e- → γπ+π- and searches for the decay φ → γf0 → γπ+π-

Achasov N. N., Gubin V. V., Solodov E. P.

The interference between the amplitudes for the processes e+e- → ρ → γπ+π- and e+e- → φ → γf0 → γπ+π- is considered, f0 production being described in the four-quark model and in the model of scalar KK̄ molecules. General expressions for the differential cross sections are given with allowance for radiative corrections and two cutoff angles. Interference patterns are obtained in the differential cross sections as a function of the photon energy and in the total cross section as a function of the beam energy.