Search for a dark leptophilic scalar produced in association with ${\tau }^{+}{\tau }^{-}$ pair in $e^{+}{e}^{-}$ annihilation at center-of-mass energies near 10.58 GeV

Belle Collaboration, D. Biswas, Sw. Banerjee +177

A dark leptophilic scalar $({\varphi }_L)$ is a hypothetical particle that couples only to leptons rather than quarks. We report on a search for ${\varphi }_L$ in the $e^+e^- \to τ^+ τ^- ϕ_L, ~ϕ_L \…