Deep Inelastic Scattering

• Stanford Linear Accelerator Center (SLAC) constructs 2 mile long accelerator in 1966

• E = 20 GeV

• Experiment by SLAC and MIT (Friedman, Kendall, Taylor -- Nobel in 1990) cracks the proton (inelastic scattering) in 1967

• Surprise when scattering rate follows Rutherford formula for scattering between point particles!

• Richard Feynman dubs proton consituents partons

• Quarks are real!

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