For a few years, one of particle physics’ most unsettling numbers seemed to be pointing somewhere strange. The trouble ...
A new calculation helps narrow down the mass of the W boson, one of the heaviest fundamental particles in the universe ...
In an underground tunnel at Fermilab near Chicago, scientists fired beams of protons and antiprotons around the four-mile Tevatron accelerator ring until they collided in the center of the 5,000-ton ...
When fundamental particles are heavier or lighter than expected, physicists' understanding of the universe can tip into the ...