First high-precision measurement of the mass of the W boson at the LHC

Geneva 12 February 2018. In a paper published today in the European Physical Journal C, the ATLAS Collaboration reports the first high-precision measurement at the Large Hadron Collider (LHC) of the mass of the W boson. This is one of two elementary particles that mediate the weak interaction – one of the forces that govern the behaviour of matter in our universe. The reported result gives a value of 80370±19 MeV for the W mass, which is consistent with the expectation from the Standard Model of Particle Physics, the theory that describes known particles and their interactions.

Arts at CERN’s Collide International award now open for entries

Geneva/Liverpool, 18 December 2017. Today, Arts at CERN has announced a new edition of the Collide International award, in partnership with the UK’s leading media arts centre, FACT (Foundation for Art and Creative Technology). The competition is open to artists of any age and from anywhere in the world whose work reflects on the cultural and social understanding of science and advanced knowledge.

ATLAS sees first direct evidence of light-by-light scattering at high energy

Geneva, 14 August 2017. Physicists from the ATLAS experiment at CERN have found the first direct evidence of high energy light-by-light scattering, a very rare process in which two photons – particles of light – interact and change direction. The result, published today in Nature Physics, confirms one of the oldest predictions of quantum electrodynamics (QED).


Subscribe to Updates

You are here