Scalar dilepton production at TeVe+e−colliders

The production of scalar dileptons, both singly and in pairs, at TeV $e^{+}{e}^{-}$ colliders is examined and compared. We show that, over a wide range of masses and Yukawa couplings, single production of dileptons dominates over that for pairs. With striking decay signatures, the discovery limit for such particles can be close to the collider center-of-mass energy.