EPJ Web of Conferences 199, 03002 (2019)
https://doi.org/10.1051/epjconf/201919903002

Near threshold kaon-kaon interaction in the reactions $e^{+}{e}^{-}\to K^{+}{K}^{-}\gamma$ and $e^{+}{e}^{-}\to K^0{\overline{K}}^0\gamma$

Institute of Physics, Jagiellonian University, Cracow, Poland

^* e-mail: leonard.lesniak@ifj.edu.pl

Published online: 1 February 2019

Abstract

Strong interactions between pairs of the K⁺K⁻ and $K^0{\overline{K}}^0$ mesons can be studied in radiative decays of ϕ(1020) mesons. We present a theoretical model of the reactions $e^{+}{e}^{-}\to \varphi \to K^{+}{K}^{-}\gamma$ and $e^{+}{e}^{-}\to \varphi \to K^0{\overline{K}}^0\gamma$. The K⁺K⁻ and $K^0{\overline{K}}^0$ effective mass dependence of the differential cross sections is derived. The total cross sections and the branching fractions for the two radiative ϕ decays are calculated.