The SUSY reach of Higgs Factories in the most challenging scenario: scalar $\tau$-leptons with lowest cross section and small mass differences

Maria Teresa Núñez Pardo de Vera, Mikael Berggren, Jenny List

The direct pair-production of the $\tilde{\tau }$, is one of the most interesting channels to search for SUSY in: the $\tilde{\tau }$ is likely to be the lightest of the scalar leptons, and th…