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We calculate dominant cross section contributions for stau pair production athadron colliders within the MSSM, taking into account left-right mixing of thestau eigenstates. We find that b-quark annihilation and gluon fusion canenhance the cross sections by more than one order of magnitude with respect tothe Drell-Yan predictions. These additional production channels are not yetincluded in the common Monte Carlo analysis programs and have been neglected inexperimental analyses so far. For long-lived staus, we investigate differentialdistributions and prospects for their stopping in the collider detectors. Newpossible strategies are outlined to determine the mass and width of the heavyCP-even Higgs boson H0. Scans of the relevant regions in the CMSSM areperformed and predictions are given for the current experiments at the LHC andthe Tevatron. The obtained insights allow us to propose collider tests ofcosmologically motivated scenarios with long-lived staus that have anexceptionally small thermal relic abundance.

Direct stau production at hadron colliders in cosmologically motivated scenarios