Elusive Feature Of Higgs Boson Just Confirmed By Experiments At CERN

An artist's impression of the Higgs field, properly known as the Brout-Englert-Higgs field. Daniel Dominguez/CERN

Remember the Higgs boson? Well, thanks to an international effort to unlock more of its secrets, it’s back in the news. As announced by CERN, a brand-new property of the all-important particle has finally been observed, precisely as predicted, proving that particle physicists are nailing it at the moment.

In case you’ve forgotten, here is the briefest of summaries of what ol’ Higgsy is, and why understanding it matters. As explained by none other than CERN, our utmost understanding of the basic building blocks of the universe – fundamental particles – and how they interact and are governed by four fundamental forces is encapsulated in the Standard Model of particle physics.

There’s a lot going on in this ever-evolving model, but the key component for us at this present moment is the Higgs field: a hypothesized, omnipresent quantum field that gave these fundamental particles their mass.

The particle linked to this field is termed the Higgs boson – and is used in major particle physics experiments, including the ATLAS and CMS experiments at CERN’S Large Hadron Collider. As noted by Scientific American, the mass of the Higgs boson could be inferred by assessing the effect it would have on other particles and fields, and their properties.

Back on July 4, 2012, after a long series of experiments – and plenty of quadruple checking – it was announced at CERN that a new particle had been spotted. It came in at a mass of 125 billion electronvolts, consistent with what the Standard Model predicted for the Higgs boson.

Its official discovery didn’t mean the world of particle physics was done with poking it around, though. Experiments designed to probe its properties and behaviors have been near-continuously carried out over the past few years, and this latest suite has managed to uncover a key characteristic of the particle that has been long predicted but never observed.

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