Reposted by InforMattics
CERN's ALICE experiment used gold ions to recreate conditions similar to the early universe, observing how light converts into matter. By colliding ultra-relativistic gold nuclei, they captured rare photon-photon interactions that generated electron-positron pairs
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phys.org
ALICE detects the conversion of lead into gold at the Large Hadron Collider
In a paper published in Physical Review C, the ALICE collaboration reports measurements that quantify the transmutation of lead into gold in CERN's Large Hadron Collider (LHC).