The decay $\tau \rightarrow K^{0}K^{-}\nu_{\tau}$ in the extended   Nambu-Jona-Lasinio model
  The full and differential widths of the decay $\tau \rightarrow K^{0}K^{-}\nu_{\tau}$ are calculated in the framework of the extended Nambu-Jona-Lasinio model. The contributions of the subprocesses with the intermediate vector mesons $\rho$(770) and $\rho$(1450) are taken into account. The obtained results are in satisfactory agreement with the experimental data. 
M.K. Volkov and A.A. Pivovarov
hep-ph