BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:Matt Solt\, UVA - Department of Physics\n\n
The constituents of dark ma tter are still unknown\, and the viable possibilities span a very large ma ss range. Specific scenarios for a thermal origin of dark matter sharpen t his mass range to within about an MeV to 100 TeV. Most of the stable const ituents of known matter have masses in the MeV to GeV range\, and a therma l origin for dark matter works in a simple and predictive manner in this m ass range as well\, yet it remains largely unexplored. The Heavy Photon Se arch (HPS) at Jefferson Lab is a fixed target experiment that uses an elec tron beam to probe models of thermal dark matter involving sub-GeV dark ph otons. HPS searches for visibly decaying dark photons through two distinct methods - a resonance search in the e+e- invariant mass distribution and a displaced vertex search for long-lived dark photons. This seminar will g ive an overview of the theoretical motivations\, the main experimental cha llenges and how they are addressed\, the results for the 2016 Engineering Run\, and future data and upgrades. In addition\, an introduction to the L ight Dark Matter eXperiment (LDMX)\, a planned next generation experiment at SLAC that will search for invisibly decaying dark photons through a mis sing-momentum experiment\, will be presented.< /span>
\n DTSTART:20230315T200000Z LOCATION:Ridley Hall\, Room 179 SUMMARY:The Heavy Photon Search at JLAB END:VEVENT END:VCALENDAR