The interference in the reaction $e^+e^-\toγπ^+π^-$ and the search for the decay $φ\toγf_0\toγπ^+π^-$

Details The interference in the reaction $e^+e^-\toγπ^+π^-$ and the search for the decay $φ\toγf_0\toγπ^+π^-$ The interference in the reaction $e^+e^-\toγπ^+π^-$ and the search for the decay $φ\toγf_0\toγπ^+π^-$

1996-10-08

arxiv.org/abs/hep-ph/9610282v1

Phys.Rev.D55:2672-2682,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, revtex, 8 ps files of figures

Scientific paper

10.1103/PhysRevD.55.2672

We describe the interference between amplitudes $e^+e^- \to \rho \to \gamma\pi^+\pi^-$ and $e^+e^- \to \phi \to \gamma f_0 \to \gamma\pi^+\pi^-$, where $f_0$ meson is considered in the frameworks of the four-quark model and the model of the scalar $K\bar K$ molecule. The general expressions for the differential cross section with the radiative corrections and two angle cuts are given. The interference patterns are obtained in the spectrum of the differential cross section by the energy of the photon and in the full cross section by the energy of the beams.

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