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Open Access Publications from the University of California

Constituent quark and diquark properties from small angle proton-proton elastic scattering at high energies

  • Author(s): Bialas, A;
  • Bzdak, A
  • et al.

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Small momentum transfer elastic proton-proton cross-section at high energies is calculated assuming the nucleon composed of two constituents - a quark and a diquark. A comparison to data (described very well up to -t ≈ 2 GeV2/c) allows to determine some properties of the constituents. While quark turns out fairly small, the diquark appears to be rather large, comparable to the size of the proton.

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