All the latest developments from Cern, home of the Large Hadron Collider, as scientists gather for a major announcement.

Two teams of physicists at the Cern laboratory near Geneva are preparing today to announce their latest efforts to discover the Higgs boson.

The elusive “God particle” has become the most sought-after particle in modern science. Its discovery would be proof of an invisible energy field that fills the vacuum of space, and excitement in the scientific community is at fever pitch.

Peter Higgs, the Edinburgh University physicist who proposed the idea of the particle in 1964, is flying in to Geneva, as are two other men who published similar theories at around the same time: François Englert, professor emeritus at the Free University of Brussels (ULB) in Belgium, and Tom Kibble, professor emeritus at Imperial College London.

The Large Hadron Collider at Cern, near Geneva. Scientists there are making an announcement this morning, thought to be about the possible discovery of the Higgs boson particle. Photograph: Martial Trezzini/AP

There have been rumours, speculation, and, last night, even an apparent leak from the laboratory when a video announcing the discovery of a new particle was accidentally posted on its website.