Production of $ ho(770)$, $\eta$ pairs in the decays $ ho(1450) ightarrow ho(770)\eta$, $ au ightarrow ho(770)\eta u_{ au}$, and in the process of $e^{+}e^{-} ightarrow ho(770)\eta$ in the Extended Nambu - Jona-Lasinio model

摘要

Production of $\rho(770)$, $\eta$ pairs at colliding of electron-positronbeams and in the decays $\rho(1450)\rightarrow \rho(770)\eta$, $\tau\rightarrow\rho(770)\eta\nu_{\tau}$ is calculated in the framework of the Nambu -Jona-Lasinio model. In the process of electron-positron annihilation and the$\tau$ - lepton decay the contributions of the intermediate $\rho(770)$ vectormeson in the ground and first radially excited state are taken into account.The theoretical prediction for the decay $\tau\rightarrow\rho(770)\eta\nu_{\tau}$ is given. The obtained results for other processes arein satisfactory agreement with the experimental data.