DOI 10.1007/s100529800978
Dynamical parton distributions revisited
M. Glück1 - E. Reya1 - A. Vogt2
1 Institut für Physik, Universität Dortmund,
D-44221 Dortmund, Germany
2 Institut für Theoretische Physik, Universität Würzburg,
Am Hubland, D-97074 Würzburg, Germany
Received: 22 June 1998 / Published online: 21 August 1998
Abstract
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 
x 10-5, relevant
to questions concerning ultra-high-energy cosmic ray and neutrino
astronomy.
Copyright Springer-Verlag
