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Heavy ion research begins at CMS

Lead-lead collisions at CMS
Lead-lead collisions at CMS

The Compact Muon Solenoid CMS experiment at CERN’s Large Hadron Collider (LHC) has recorded its first Lead-Lead collisions at a centre-of-mass energy of 2.76 TeV per nucleon pair, marking the start of its heavy ion research programme. Physicists around the world expect a wealth of new results and phenomena from these collisions, which occur at energies 14 times higher than previously achieved by the Relativistic Heavy Ion Collider (RHIC, Brookhaven, USA).

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