Summarize: One such particle is the neutralino, a WIMP that probably weighs as much as 1000 hydrogen atoms (henceforth, we refer to the neutralino as a generic WIMP). Neutralinos are postulated by supersymmetric models, which extend the standard model to higher energies. To date, no neutralinos have been created in particle accelerators, but in the future they may be produced in the world's most powerful particle accelerator, the Large Hadron Collider currently being built at CERN