Tag Archives: tetraquark

Physicists on CERN’s LHCb collaboration say they’ve observed three new exotic particles – X(4274), X(4500) and X(4700) – and also confirmed the existence of a fourth one, X(4140). According to the scientists, each of these particles contains two quarks and two antiquarks. View of the LHCb detector. Image credit: CERN. …

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