Structure of the proton.

  title={Structure of the proton.},
  author={Richard Phillips Feynman},
  volume={183 4125},
  • R. Feynman
  • Published 15 February 1974
  • Physics
  • Science
Protons are not fundamental particles but seem to be made of simpler elements called quarks. The evidence for this is given. But separated quarks have never been seen. A struggle to explain this seeming paradox may be leading us to a clearer view of the precise laws of the proton's structure and other phenomena of high energy physics. 
Particle physics: And you're glue
It is widely understood that protons and neutrons are made up of quarks. Now, experiments in high-energy accelerators are allowing physicists to resolve in greater detail what is happening inside
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In these lectures, I describe measurements of the polarized and unpolarized structure functions of the proton and the neutron. The main emphasis is on a clear, straightforward description of what is
Probing nucleon spin structure
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Some simple arguments are presented why the trajectory behaviour may be expected if hadrons consist of some constituents like quarks, bound by some range-independent force which may be measured by
Structure of Hadrons in Hard Processes
In these lectures I want to discuss how the structure functions in deep inelastic scattering relate to quark and gluon correlation functions. In particular we will consider the issue of intrinsic
Proton Spin in the Instanton Background
The proton form factors are reduced to vacuum correlators of 4 quark fields by assuming independent constituent quarks. The axial singlet quark and gluonic form factors are calculated in the
The strange-quark distribution
We discuss the latest CCFR determination of the strange sea density of the proton. We comment on the differences with a previous, leading-order, result and point out the relevance of quark mass
More news about quarks
The “constituents” quarks and leptons of matter (with rest-mass) are compared with the historical development of “elements” in chemistry. If unsaturated quarks induce high (and at the moment
This paper gives a pedagogical introduction to our knowledge of the spin structure of the nucleon. In particular, polarised deep inelastic lepton scattering is presented as a tool to study how the


  • Rev. 79, 615
  • 1950
Phys. Rev. D9 Phys. Lett. B193
  • Phys. Rev. D9 Phys. Lett. B193
  • 1974
Phys. Rev. D14
  • Phys. Rev. D14
  • 1966
Plot of the transverse recoil polarization of proton I T versus ǫ [see Eq. (106)], line description is same as Fig
  • Plot of the transverse recoil polarization of proton I T versus ǫ [see Eq. (106)], line description is same as Fig
Plot of the longitudnal recoil polarization of proton I L versus ǫ
    • Rev. 175, 2195 (1968); S. Glashow and S. Weinberg, Phys. Rev. Lett. 20, 224
    • 1968
    Phys. Rev. D Phys. Lett. B
    • Phys. Rev. D Phys. Lett. B
    • 1976
    98) and (99) respectively. Solid line for q 2 = 0.5, dashed line q 2 = 1, dotted line q 2 = 2.64, dash-dotted line q 2 = 3.2, dash-dot-dot line q 2 = 5
      Phys. Rev. Phys. Rev. Lett
      • Phys. Rev. Phys. Rev. Lett
      • 1968
      • Rev. D14, 1467
      • 1966