DOI 10.1007/s100529901066
Scaling violation and shadowing corrections at HERA
A.L. Ayala Filho1,2 - M.B. Gay Ducati2 - E.M. Levin 3,4
1 Instituto de Física, Univ. Federal do Rio Grande do Sul,
Caixa Postal 15051, 91501-970 Porto Alegre, RS, Brazil
2 Instituto de Física e Matemática, Univ. Federal de Pelotas, Campus Universitário, Caixa Postal 354, 96010-900,
Pelotas, RS, Brazil
3 HEP Department, School of Physics and Astronomy,
Raymond and Beverly Sackler Faculty of Exact Science,
Tel Aviv University, Tel Aviv 69978, Israel
4 DESY Theory, Notkestrasse 85, 22607, Hamburg, Germany
Received: 21 September 1998 /Published online: 14 January 1999
Abstract
We study the value of shadowing corrections (SC)
in the HERA kinematic region in the Glauber-Mueller approach. Since the
Glauber-Mueller approach was proven in perturbative quantum chromodynamics
(QCD) in the double-logarithmic approximation (DLA),
we develop the DLA approach for the deep
inelastic structure function which takes into account the SC.
Our estimates show small SC for F2 in the HERA kinematic region while
they turn out to be sizable for the gluon structure function. We compare
our estimates with those for gluon distribution in leading order (LO) and
next to leading order (NLO) in the DGLAP evolution equations.
Copyright Springer-Verlag
