A model for the parton distributions in hadrons
نویسنده
چکیده
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 scale, the distributions are evolved with next-to-leading order DGLAP and give the proton structure function F2(x,Q ) in good agreement with deep inelastic scattering data. PACS: 12.38.Aw, 12.38.Lg, 12.39.-x
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