**The parton model was** proposed by Richard Feynman in 1969 ^{[1]} for the analysis of proton collisions at high energies. This model assumes that a hadron (such as a proton ) consists of several point formations called partons. The parton model made it possible to explain the results of deep inelastic scattering of electrons by protons ^{[2]} . Then, after the discovery of Bjorken's scaling, confirmation of the quark model, and asymptotic freedom in quantum chromodynamics , partons were identified as quarks and gluons .

## Notes

- ↑ RP Feynman, Proceedings of the 3rd Topical Conference on High Energy Collision of Hadrons, Stony Brook, NY (1969)
- ↑ JD Bjorken and EA Paschos, Inelastic Electron-Proton and γ-Proton Scattering and the Structure of the Nucleon,
*Phys.**Rev.***185**, 1975-1982 (1969). DOI : 10.1103 / PhysRev.185.1975

## Links

- Parton distribution functions - from HEPDATA: The Durham HEP Databases
- CTEQ6 parton distribution functions

### Parton Distribution Functions

- CTEQ Collaboration, S. Kretzer
*et al.*, “CTEQ6 Parton Distributions with Heavy Quark Mass Effects,”*Phys.**Rev.***D69**, 114005 (2004). - M. Glück, E. Reya, A. Vogt, Dynamical Parton Distributions Revisited,
*Eur.**Phys.**J.***C5**, 461-470 (1998). - AD Martin
*et al.*, “Parton distributions incorporating QED contributions”,*Eur.**Phys.**J.***C39,155161**(2005). - X. Ji, Generalized Parton Distributions,
*Annu.**Rev.**Nucl.**Part.**Sci.***54**, 413-50 (2004). - I will press V. Kh. From neutrino to atom