In the very early, very hot moments of the universe, the electromagnetic and weak nuclear forces were actually the same force—the electroweak interaction. Scientists can now study this interaction ...

During the International Conference on High-Energy Physics (ICHEP 2020), the ATLAS collaboration presented the first observation of photon collisions producing pairs of W bosons, elementary particles ...

The standard model (SM) of particle physics has developed as a result of painstaking work, over several decades, by a large number of physicists. It is a quantum field theory, combining quantum ...

Display of a candidate event for the production of two W+ bosons via vector-boson scattering, followed by their decay into two muons and two muon neutrinos. The muons are represented by the red lines ...

Observational first: physicists have used the ATLAS experiment at CERN to observe the production of top-quark and photon pairs. (Courtesy: CERN) For the first time, particle physicists have observed ...

Since it opened for business a couple of years back, CERN’s Large Hadron Collider (LHC) has been confirming the validity of the Standard Model of particle physics to ever-greater precision and ...