Carnegie Mellon University

Physics Colloquium

Searching for dark matter candidates with accelerators

The existence of particle dark matter is now solidly established by astrophysical and cosmological observations. However, direct searches to date have not determined any of the key parameters of the particles involved, including the mass of the dark matter particles and the nature of any interaction with the particles of the standard model. Indeed, much of the most-promising phase space has been excluded by recent direct-detection experiments. In this talk, I will review the complementary role of current and proposed accelerator-based experiments to identify possible dark-matter candidates. Of particular interest is the proposed Light Dark Matter eXperiment (LDMX), which has a substantial technological connection to the HL-LHC collider program at CERN.