Scientists are expected to announce this week that the elusive Higgs boson 'God particle' has been found.
Five leading theoretical physicists, including UK physicist Peter Higgs, have been invited to the event on Wednesday, sparking speculation that the particle has been discovered.
CERN, the European Organization for Nuclear Research, has confirmed researchers were still analysing data on the so-called God particle.
Scientists at the Large Hadron Collider are expected to say they are 99.99 per cent certain it has been found - which is known as 'four sigma' level, according to London's Daily Mail.
Finding the Higgs boson would validate the Standard Model, a theory explaining how the universe is built, and could be a gateway to verifying other parts of physics such as superparticles or dark matter. The research would help scientists gain a better understanding of the universe and how galaxies hold together.
Physicists first predicted that the Higgs Boson subatomic particle exists 48 years ago.
The Higgs boson is regarded as the key to understanding the universe. Physicists say its job is to give the particles that make up atoms their mass, says the Daily Mail.
Without this mass, these particles would zip though the cosmos at the speed of light, unable to bind together to form the atoms that make up everything in the universe, from planets to people
If the physicists' theory is correct, a few Higgs bosons should be created in every trillion collisions, before rapidly decaying.
US scientists found some evidence of the existence of the Higgs boson in two independent experiments in March, but the clues weren't strong enough to declare the so-called God particle cornered.