Ten years ago, scientists announced the discovery of the Higgs boson, which helps explain why elementary particles (the smallest building blocks of nature) have mass. For particle physicists, this was the end of a decades-long and hugely difficult journey – and arguably the most important result in the history of the field. But this end also marked the beginning of a new era of experimental physics. In the past decade, measurements of the properties of the Higgs boson have confirmed the predictions of the standard model of particle physics (our best theory for particles). But it has also raised questions…
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