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Highs and lows in first year of data from the LHC

27 July 2011

FIRST the good news: the Large Hadron Collider has found hints of the much-ballyhooed Higgs particle. Now the bad: the hints are tentative and may vanish with further data. Also, the collider has glimpsed no sign of supersymmetry, the leading theory to explain dark matter.

In the wreckage of colliding protons, the ATLAS detector at the LHC, located at CERN near Geneva, Switzerland, has found an unexpected abundance of pairs of particles called W bosons with energies between about 120 and 140 gigaelectronvolts (GeV).

That could be due to the decay of a Higgs particle with a mass in…

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