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The ATLAS Collaboration at CERN used data from 13 TeV proton–proton collisions at the Large Hadron Collider to observe for the first time entanglement between a pair of top quarks.
No sign of sterile neutrinos was found in the latest, and most extensive, analysis done on data taken by the STEREO experiment and yet, the case is not closed.
A paper in Nature Communications reports experiments and simulations of spherical particles that help show how finite numbers of spheres pack in practice.