In the first study of its kind at the Large Hadron Collider (LHC), the CMS collaboration has tested whether top quarks adhere to Einstein's special theory of relativity. The research is published in ...

There’s something amiss with a mass. A new measurement of the mass of an elementary particle, the W boson, has defied expectations. The result hints at a possible flaw in physicists’ otherwise ...

The muon’s magnetism is still strong. Its most precise measurement yet is in line with a series of earlier results — and seals an embarrassing discrepancy with decades of theoretical calculations that ...

Few scientists have come into as much fame in recent years as British theoretical physicist Peter Higgs, the namesake of the boson that was discovered in 2012, who died on 8 April, aged 94. Peter ...