2000•arXiv (Cornell University)Open access

Q^2 evolution of parton distributions at small x. A study of higher-twist effects

A. V. Kotikov, G. Parente

Abstract

We investigate the Q^2 evolution of parton distributions at small x values, obtained in the case of flat initial conditions. The contributions of twist-two and (renormalon-type) higher-twist operators of the Wilson operator product expansion are taken into account. The results are in excellent agreement with deep inelastic scattering experimental data from HERA.

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Key concepts: HERA, Twist, Parton, Renormalon, Deep inelastic scattering, Physics, Operator product expansion, Particle physics