
The LHC Smashed Protons Together, Made a Higgs Boson, Watched It Split Into Two Z Bosons That Lived Less Than a Trillionth of a Trillionth of a Second, and Found They Were Quantum Entangled
An Oxford-led analysis of ATLAS data reconstructed the Z bosons' spins from the electrons and muons they left behind. It is one of the highest-energy confirmations of entanglement ever recorded, a trillion times beyond tabletop photon experiments.





