Description
We discuss the phenomenology of light scalar tops (stops) in the minimal supersymmetric standard model (MSSM). We analyse the discovery potential of stops in the co--annihilation region at the Large Hadron Collider (LHC). The bino-like neutralino is the lightest supersymmetric particle (LSP) and the lighter stop is the next-to-LSP. Such scenarios can be consistent with electroweak baryogenesis and also with dark matter constraints. Provided, the mass difference between LSP and NLSP is small enough,we exploit the opportunity of a light and long-lived stop.We investigate the prospects to extract supersymmetric couplings from a decay length measurement at the LHC.
Finally, we discuss the prospects to test relations of the superpotential. So far, no such tests have been proposed for the LHC.