Researchers at Illinois' Fermilab Tevatron
are cautiously optimistic that a bump in their data may herald the discovery either a new force, such as gravity or magnetism, or a new elementary particle. And no, it doesn't seem to be the Higgs boson.
A new analysis of 10,000 collisions between proton and anti-protons created jets of heavier particles, which was to be expected. What was surprising was that 250 more times than expected, those particles were much heavier than they should have been, clocking in around 144 billion electron volts. This suggests that a new particle was created and decayed before it hit the detector, or a new force acted on the particles.