Unstable Heavy Bayron (Eric)

• Baryons are hadrons composed of three quarks (examples: proton, neutron, omega, lambda).

• Protons (up, up, down) and neutrons (up, down, down) are stable.

• Omega, lambda, xi, sigma, and delta are unstable and heavy (they decay very rapidly).

• Protons were discovered in 1919 and anti-protons in 1955 which sparked the interest to discover the other 120+ baryons in existence.

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