Graph of first subatomic resonance

Graph of first subatomic resonance

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Caption: Graph showing the discovery of the first subatomic resonance, known as the "delta", at the Brookhaven National Laboratory, Long Island, in 1953. Resonances are extremely short-lived excited states of subatomic particles. The delta is an excited state of the proton, and was discovered when increasingly energetic pions were used to bombard a hydrogen target. Pions of a particular energy excited the hydrogen's protons into a resonant state. The graph was drawn by Luke Yuan who, with colleague Sam Lindenbaum, made the discovery.

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Keywords: atomic, bnl, brookhaven national, delta resonance, discover, discovery, lab, laboratory, luke yuan, odyssey, particle physics, proton, resonance subatomic particle, sam lindenbaum

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