Direct stau production at hadron colliders and implications for cosmological constraints

by Jonas Lindert (MPP)

Thursday 16 Jun 2011, 11:15 → 12:15 Europe/Berlin

313 (Seminar room)

We investigate dominant contributions to stau pair production at hadron colliders within the MSSM, taking into account left-right mixing of the stau eigenstates. We find that $b$-quark annihilation and gluon fusion can enhance the cross sections by more than one order of magnitude with respect to the Drell-Yan predictions. We address the testablity of relevant conditions for which the cosmological relic abundance of long-lived staus can be exceptionally small such that compelling gravitino and axino dark matter scenarios become viable. We investigate different aspects of collider phenomenology for long-lived staus and link possible observables with cosmologically motivated regions.