Probing sensitivity to charged scalars through partial differential widths: $\tau \to K\pi \pi {\nu }_{\tau }$ decays

Nicolas Mileo, Ken Kiers, Alejandro Szynkman

We define and test $\mathrm{CP}$-even and $\mathrm{CP}$-odd partial differential widths for the process $\tau \to K\pi \pi {\nu }_{\tau }$ assuming that an intermediate heavy charged scalar con…