A decadelong experiment produced the most accurate measurement yet of the mass of W bosons. These particles are responsible for the weak force, and the result is more evidence for undiscovered physics.
Cern has measure a tiny mass difference by colliding huge amounts of particles.
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When scientists created the Higgs particle with protons, they needed the 10km-wide Large Hadron Collider. A muon machine could achieve it with a diameter of just 200 metres.
One of the great mysteries of the universe is why there is so much more matter than antimatter. Now a new experiment is helping us understand the nature of antimatter better than ever before.
When particles collide.
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The tiniest of particles could have huge potential to solve the greatest mysteries of the universe - including why there is more matter than antimatter.
The atmosphere of black holes contain a matter-antimatter plasma.
NASA/Flickr
In the past week, many media outlets have reported the discovery of an antimatter “belt” circling the earth. A range of potential uses for this belt have already been floated – perhaps the most exciting…