Hints of a new particle carrying a fifth force of nature have been multiplying at the LHC – and many physicists are convinced this could finally be the big one
, Switzerland – one that might, at long last, break the standard model, our current best picture of nature’s fundamental workings.
The measurement concerns subatomic particles known as “beauty” or “bottom” quarks. Over the past few years, their behaviour has hinted at forces beyond our established understanding. Now, with the hints continuing to firm up, and more results imminent, it’s crunch time. If these quarks are acting as they appear to be, then we are not only seeing the influence of an unknown force of nature, but perhaps also the outline of a new, unified theory of particles and forces.
That is a big if – but many particle physicists are on tenterhooks, myself included.”I’ve never seen something like this,” says, a theorist at the University of Zurich, Switzerland. “I’ve never been so excited in my life.” For all its dazzling success in describing the basic ingredients of our universe, the standard model of particle physics has many shortcomings. It can’t explain
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