About the US/LHC Project

The Large Hadron Collider at CERN near Geneva, Switzerland is opening new vistas on the deepest secrets of the universe, stretching the imagination with newly discovered forms of matter, forces of nature, and dimensions of space. This site provides general information about the Large Hadron Collider and detailed information about American participation in the LHC accelerator and experiments. U.S. LHC participation is supported by the US Department of Energy's Office of Science and the National Science Foundation.

A proton-proton collision event in the CMS experiment producing two high-energy photons (red towers). This is what we would expect to see from the decay of a Higgs boson but it is also consistent with background Standard Model physics processes. (Courtesy: CERN)

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LHC Decoded

Four experiments that sit along the Large Hadron Collider at CERN – ATLAS, CMS, ALICE and LHCb – collect data from billions of high-energy proton collisions in the quest to explain how the universe as we know it came to exist. Each collision produces a shower of new particles that can be seen in the detectors. Snapshots of these collisions are called Event Displays, which scientists record and later analyze for evidence of new physics. Learn how to read Event Displays, along with the LHC Page 1 display that keeps people up-to-date on the status of the accelerator, by clicking the links below.


CMS Event Display	ATLAS Event Display


ALICE Event Display	LHCb Event Display