These collisions briefly produce heavier particles that then decay back into lighter ones. Testing the Standard Model is fun – you just smash particles together at very high energies. Bodhita/WikimediaCommons, CC BY-SA Measuring W bosons The Collider Detector at Fermilab collected data from trillions of collisions that produced millions of W bosons. The Standard Model was complete, and all the measurements we made hung together beautifully with the predictions. I helped search for the Higgs boson on three successive experiments, and at last we discovered it in 2012 at the Large Hadron Collider at CERN. It appeared to have the mass of roughly a medium-sized atom such as bromine.īy the 2000s, there was just one piece missing to complete the Standard Model and tie everything together: the Higgs boson. In 1983, two experiments at CERN in Geneva, Switzerland, captured the first evidence of the existence of the W boson. Since the advent of the Standard Model in the 1960s, scientists have been working their way down the list of predicted yet undiscovered particles and measuring their properties. It also postulated that a third particle, the Higgs boson, is what gives all other particles – including W and Z bosons – mass.
HIGGS BOSON MASS SERIES
In the 1960s, a series of theoretical and experimental breakthroughs proposed that the weak force is transmitted by particles called W and Z bosons. This process is driven by the weak force, and since the early 1900s, physicists sought an explanation for why and how atoms decay.Īccording to the Standard Model, forces are transmitted by particles. But some nuclei are unstable and undergo radioactive decay, slowly releasing energy by emitting particles. The strong force holds atomic nuclei together.
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