John Ellis is a theoretical physicist primarily interested in research on particle physics beyond the Standard Model. Much of his work relates directly to interpreting results of searches for new particles and forces. He is very active in efforts to understand the Higgs particle discovered in 2012 at CERN, as well as its implications for possible new physics such as dark matter and supersymmetry.
Currently he is also researching on searches for new physics with gravitational waves. He led the CERN Theory Division for six years, and is now the Clerk Maxwell Professor of Theoretical Physics at King's College, London.
John Ellis was awarded the Maxwell Medal (1982) and the Paul Dirac Prize (2005) by the Institute of Physics, and was elected Fellow of the Royal Society of London in 1985 and of the Institute of Physics in 1991.