The Large Hadron Collider managers have decided to increase the energy of collisions to 4 TeV per beam, for a total energy of 8 TeV. Last year, the LHC smashed two beams of protons together at an energy of 3.5 teraelectronvolts (TeV) each, resulting in collisions with a total energy of 7 TeV.
Running at 8 instead of 7 TeV should boost the machine's sensitivity to Higgs particles – assuming they are really there – by 30 to 40 per cent, says Greg Landsberg of Brown University in Providence, Rhode Island, who is involved in CMS, one of the LHC's two main detectors.
The decision is described in this 61 page powerpoint
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