DOI 10.1007/s100529900245
Angular and current-target correlations
in deep inelastic
scattering at HERA
The ZEUS Collaboration
J. Breitweg - et al.
Argonne National Laboratory, Argonne, IL, US
Received: 18 May 1999 / Published online: 3 November 1999
Abstract
Correlations between charged particles in deep inelastic
e+p scattering have been studied in the
Breit frame with the ZEUS detector at HERA using
an integrated luminosity of 6.4pb-1.
Short-range correlations are analysed in terms
of the angular separation
between current-region particles
within a cone centred around the virtual photon axis.
Long-range correlations
between the current and target
regions have also been measured.
The data support predictions for the scaling behaviour of the angular
correlations at high Q2 and for anti-correlations
between the current and target regions over a large range in Q2 and
in the Bjorken scaling variable x.
Analytic QCD calculations and Monte Carlo models correctly
describe the trends of the data at high Q2, but show
quantitative discrepancies.
The data show differences between
the correlations in deep inelastic scattering
and e+e- annihilation.
Copyright Springer-Verlag 2000
