Experimental High-Energy Physics

The IU HEP collider group investigates the fundamental constituents of matter and forces through very high energy collisions of hadronic particles. Our research takes place primarily at the ATLAS Experiment, located at the CERN laboratory in Switzerland, and the DØ Experiment at Fermilab near Chicago.


ATLAS Experiment

The energy reach of the LHC supercedes the Tevatron by nearly an order of magnitude. The recent discovery of the Higgs Boson shed new light on our understanding of the Standard Model, and we are continuing to search for new particles, interactions or extra dimensions that will further explain our Universe. The IU ATLAS group participates in a wide range of physics analyses, including Higgs, Vector Boson Fusion, Vector Boson Scattering, B Physics and exotic particle searches. We have had responsibilities for the design and fabrication of the barrel transition radiation tracker (TRT) and have continuing roles in TRT operations. We are also involved in the development of ATLAS Phase-I and Phase-II upgrades to the Level-1 calorimeter trigger, specifically the global feature extractor (gFEX) that will trigger on boosted objects and global event quantities and the Global Event Processor that will run offline-quality algorithms to identify leptons, jets, and missing energy in Phase-II. We’re beginning to work on the control, monitoring and read-out of the new inner tracker (ITk). In addition, we operate an ATLAS Tier 2 computing site at Indiana University in collaboration with the University of Chicago and U. Illinois, Urbana-Champaign.