Chargino Pair Production at Linear Collider and Split Supersymmetry
Abstract
Recently N. Arkani-Hamed and S. Dimopoulos proposed a supersymmetric model Arkani-Hamed:2004fb, dubbed "Split Supersymmetry" in Ref. Giudice:2004tc, which can remove most of the unpleasant shortcomings of TeV Supersymmetry. In this model all scalars except one finely tuned Higgs boson are ultra heavy while the neutralino and chargino might remain light in order to achieve gauge coupling unification and accord with the dark matter density. In this paper, we investigated the impact of this new model on chargino pair production at next generation linear colliders. Our numerical results show that this process can be used to probe sneutrino mass up to 10 TeV. Therefore, precise measurements of chargino pair production at the linear colliders could distinguish Split Supersymmetry from TeV Supersymmetry.
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