The European Physical Journal C - Particles and Fields

, Volume 5, Issue 3, pp 461–470

Dynamical parton distributions revisited


  • M. Glück
    • Institut für Physik, Universität Dortmund, D-44221 Dortmund, Germany
  • E. Reya
    • Institut für Physik, Universität Dortmund, D-44221 Dortmund, Germany
  • A. Vogt
    • Institut für Theoretische Physik, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
Theoretical physics

DOI: 10.1007/s100529800978

Cite this article as:
Glück, M., Reya, E. & Vogt, A. Eur. Phys. J. C (1998) 5: 461. doi:10.1007/s100529800978


Dynamical parton densities, generated radiatively from valence-like inputs at some low resolution scale, are confronted with recent small-x data on deep inelastic and other hard scattering processes. It is shown that within theoretical uncertainties our previous (1994) dynamical/radiative parton distributions are compatible with most recent data and still applicable within the restricted accuracy margins of the presently available next-to-leading order calculations. Due to recent high precision measurements we also present an updated, more accurate, version of our (valence-like) dynamical input distributions. Furthermore, our perturbatively stable parameter-free dynamical predictions are extended to the extremely small-x region, \(10^{-8} \lesssim x \lesssim 10^{-5}\), relevant to questions concerning ultra-high-energy cosmic ray and neutrino astronomy.

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© Springer-Verlag Berlin Heidelberg 1998