Simultaneous investigation of double Bc meson productions in electron-positron annihilation into double photons using BS framework

In this work, the cross-sections for the productions of vector-pseudoscalar, pseudoscalar–pseudoscalar and vector–vector [Formula: see text] mesons in electron–positron annihilation into double photons are calculated within the framework of Bethe–Salpeter formalism, at center-of-mass energy [Formula: see text] [Formula: see text]GeV. The calculated cross-sections for this problem are compared with other theoretical model results, but their experimental data are not yet described.