Here, following a collision of two protons, a Higgs boson is produced which decays into two jets of hadrons and two electrons. "The Standard Model describes what we have measured, but we know it doesn’t have gravity in it, it doesn't have dark matter," said CERN physicist William Murray, the senior Higgs convener at ATLASand a physicist at the U.K.'s Science and Technology Facilities Council."So we're hoping to extend it to include more." The Electroweak ForceĪn example of simulated data modeled for the CMS particle detector on the Large Hadron Collider. It doesn't encompass gravity (so don't count on catching that fly ball), for example, and leaves out the dark matter thought to make up 98 percent of all matter in the universe. While the discovery of the Higgs boson would complete the Standard Model, and fulfill all its current predictions, the Standard Model itself isn't thought to be complete. If we don't it means we made some assumptions that are wrong, and we have to go back to the drawing board." "So it would definitely be a confirmation that the theories we have now are right. "It's the missing piece in the Standard Model," said Jonas Strandberg, a researcher at CERN working on the ATLAS experiment. The Standard Model is the reigning theory of particle physics that describes the universe's very small constituents.Įvery particle predicted by the Standard Model has been discovered - except one: the Higgs boson. (Image credit: Karl Tate, LiveScience Infographic Artist) The Standard Model is the collection of theories that describe the smallest experimentally observed particles of matter and the interactions between energy and matter.
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