Analysis was focused on a restricted phase space (close to the production threshold) where entanglement signals are strongest.
Using the ATLAS detector's sophisticated tracking and calorimetry to reconstruct the decay of top quarks with extreme precision. EntanglementHD
Observation of quantum entanglement with top quarks at the ATLAS detector Authors: ATLAS Collaboration Publication: Nature , Volume 633, pages 542–547 (2024). Core Findings Analysis was focused on a restricted phase space
The existence of an entangled state was confirmed with a significance of more than five standard deviations ( ), clearing the threshold for a formal "discovery". Core Findings The existence of an entangled state
It demonstrates quantum entanglement at an energy scale much higher (TeV range) than previously achieved in systems like photons or atoms.
In physics contexts, "HD" or high-definition often refers to or high-resolution measurement techniques. This specific ATLAS experiment utilized: