A dispersive analysis of the pion vector form factor and ${\tau }^{-}\to K^{-}{K}_S{\nu }_{\tau }$ decay

Sergi Gonzàlez-Solís, Pablo Roig

We explore the potential of a combined analysis of the decays ${\tau }^{-}\to {\pi }^{-}{\pi }^0{\nu }_{\tau }$ and ${\tau }^{-}\to K^{-}{K}_S{\nu }_{\tau }$ in the determination of the $\rho (1450)$ and $\rho (1700)$ resonance pro…