2018 Impact factor 4.843
Particles and Fields
Eur. Phys. J. C 7, 263-270
DOI 10.1007/s100529801001

Interpolating between soft and hard dynamics
in deep inelastic scattering

P. Desgrolard1 - L. Jenkovszky2 - F. Paccanoni3

1 Institut de Physique Nucléaire de Lyon, IN2P3-CNRS et Université Claude Bernard, F-69622 Villeurbanne Cedex, France (e-mail: desgrolard@ipnl.in2p3.fr)
2 Bogolyubov Institute for Theoretical Physics, Kiev-143, Ukraine (e-mail: jenk@bitp.kiev.ua)
3 Dipartimento di Fisica, Universitá di Padova, Istituto Nationale di Fisica Nucleare, Sezione di Padova, via F.Marzolo,
I-35131 Padova, Italy (e-mail: paccanoni@pd.infn.it)

Received: 9 March 1998 / Revised version: 26 May 1998 / Published online: 5 October 1998

Abstract
An explicit model for the proton structure function is suggested, interpolating between low-Q2 vector meson dominance and Regge behavior, on the one hand, and the high-Q2 solution of the Gribov-Lipatov-Altarelli-Parisi evolution equation, on the other hand. The model is fitted to the experimental data in a wide range of the kinematical variables with emphasis on the low-x HERA data. The boundaries, transition region and interface between various regimes are quantified.


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