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ATLAS observes new Bc meson excited state
- May 26, 2026 at 1:10 PM
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Protons and neutrons—the building blocks of matter—belong to a huge class of particles called hadrons. Hadrons are composite particles made of quarks that are bound together by the strong force. They are classified into two groups: baryons, which consist of three quarks (like protons and neutrons), and mesons, which are formed by a quark–antiquark pair.
Originally published at Phys.org