A model for the parton distributions in hadrons

Details A model for the parton distributions in hadrons A model for the parton distributions in hadrons

1998-03-31

arxiv.org/abs/hep-ph/9803496v2

Phys.Lett. B432 (1998) 402-410

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, Latex, 5 figures. Added discussion on the applicability of the model at small Q^2. Figure 3 modified to show smaller

Scientific paper

10.1016/S0370-2693(98)00659-5

A simple model is presented for the parton distributions in hadrons. The parton momenta in the hadron rest frame are derived from a spherically symmetric, Gaussian, distribution having a width motivated by the Heisenberg uncertainty relation applied to the hadron size. Valence quarks and gluons originate from the `bare' hadron, while sea partons arise mainly from pions in hadronic fluctuations. Starting from a low Q^2 scale, the distributions are evolved with next-to-leading order DGLAP and give the proton structure function F2(x,Q^2) in good agreement with deep inelastic scattering data.

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