CERN Finds Quantum Entanglement Between Z Bosons in Higgs Decays

Physicists at CERN’s Large Hadron Collider have observed strong evidence that pairs of short‑lived Z bosons become quantum‑entangled during the decay of Higgs bosons. The experiment used data from high‑energy proton‑proton collisions, where Higgs particles are produced and then decay almost instantaneously into two Z bosons. By measuring correlations between the decay products of the Z bosons, researchers found patterns that can only arise if the bosons share an entangled quantum state. The result demonstrates that Einstein’s “spooky action at a distance” survives even under the most extreme laboratory conditions, where particles are created and destroyed in fractions of a second at energies far beyond everyday experience. This finding extends the known domain of quantum entanglement into the realm of fundamental particle physics.