Supersymmetry at the dawn of the LHC era

Abstract

In this thesis, I explore various experimental, theoretical, and observational consequences of supersymmetry (SUSY). I show how copious production of Higgs bosons in SUSY events at the LHC can be a striking signal of multiple SUSY-breaking. In the context of anomaly mediation in supergravity, I demonstrate how goldstino couplings can be used as a probe of the underlying symmetry structure of unbroken SUSY in anti-de Sitter space. When multiple SUSY-breaking occurs and goldstini comprise most of the dark matter in the universe, I find a new two-body decay mode of a goldstini to a gravitino and a single photon that could be a striking indirect detection of dark matter if it were seen at gamma-ray telescopes such as FERMI.