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So what exactly is this Higgs boson thing anyway? (+video)

Why do some call it the 'God particle'? And what, exactly, does it do?

For decades now, scientists have theorized about a missing piece to the puzzle of the universe -- nicknamed the "God particle" -- that makes all the parts of an atom stick together, giving everything its size and shape.
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In 1964, the British physicist Peter Higgs wrote a landmark paper hypothesizing why elementary particles have mass. He predicted the existence of a three-dimensional "field" that permeates space and drags on everything that trudges through it. Some particles have more trouble traversing the field than others, and this corresponds to them being heavier. If the field — later dubbed the Higgs field — really exists, then Higgs said it must have a particle associated with it: the Higgs boson.

Fast forward 48 years: On Wednesday (July 4), physicists at the Large Hadron Collider (LHC), the world's largest atom smasher in Geneva, Switzerland, announced they had discovered a Higgs-like particle at long last. If the new particle turns out to be the Higgs, it will confirm nearly five decades of particle physics theory, which incorporated the Higgs boson into the family of known particles and equations that describe them known as the Standard Model.

The search for the Higgs gained a level of public attention unusual for physics partly thanks to the physicist Leon Lederman's 1993 book "The God Particle" (Dell Publishing). Lederman gave the Higgs its godly nickname because the particle is "so central to the state of physics today, so crucial to our final understanding of the structure of matter, yet so elusive," he wrote in the book.


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