Scientists will be looking for evidence of "supersymmetry" - a theory in which existing elementary particles are paired with a massive "shadow" partner - and extra dimensions.
The difficulties stem from the fact that the interaction between elementary particles and fields is really too violent for a satisfactory theory to be set up.
The elementary particles of atoms are almost a perfect sphere, a study has found.
He further predicted that every elementary particle with a spin has its counterpart with the same mass but opposite electric charge, or that a particle has an antiparticle.
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