Beyond the Standard Model

Some possible directions for physics beyond the Standard Model are reviewed, with particular emphasis on topics relevant to astrophysics and cosmology, including supersymmetry at the TeV scale and neutrino physics. Constraints on the minimal supersymmetric extension of the Standard Model with universal soft supersymmetry-breaking terms (CMSSM) are discussed. The prospects for observing supersymmetry at accelerators and in non-accelerator experiments are reviewed using benchmark scenarios to focus the discussion. The status and prospects of experiments on neutrino masses and oscillations are also reviewed, as is the possibility of observing transitions between different charged leptons.