Marissa Gebhard | Mar. 14, 2013 | College of Science
On Thursday, March 14, at the Rencontres de Moriond conference in La Thuile, Italy, the ATLAS and CMS (compact muon solenoid) collaborations at CERN’s Large Hadron Collider (LHC) presented preliminary new results that further elucidate the Higgs-like particle discovered last summer.
“In July of last year, we presented compelling evidence for the discovery of the Higgs boson, observing its decays to vector bosons, but had insufficient data to confirm that it behaved exactly as we thought it should and to measure all of its possible decays,” says Colin Jessop, professor of physics and team leader of the Notre Dame group that is part of the CMS collaboration. “Now we have two and a half times more data, which has allowed us to confirm the existence of predicted decays to fermions, and to measure the spin and parity of the Higgs. We can now say with some surety that the new particle behaves exactly as a Higgs boson should.”
(Photo: Notre Dame high energy physicists, left to right, Mitch Wayne, Kevin Lannon, Colin Jessop, Randy Ruchti, Mike Hildreth and Nancy Marinelli (not pictured) worked with a number of international collaborators on the search for the Higgs boson)