Even at the most powerful particle accelerator on Earth, the discovery of a new particle is a big deal. Finding five new baryons in one go, as the Large Hadron Collider beauty experiment (LHCb) has done, is truly historical. The result will help researchers refine theories of the strong interaction, which binds quarks together in conventional baryons, like protons and neutrons, and in more exotic ones, like tetraquarks and pentaquarks.
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