  Charged multiplicity distributions and the mean charged multiplicity have
been investigated in inclusive neutral current deep inelastic ep scattering
with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb-1. The
measurements were performed in the current region of the Breit frame, as well
as in the current fragmentation region of the hadronic center-of-mass frame.
The KNO-scaling properties of the data were investigated and the energy
dependence of multiplicity distributions was studied using different energy
scales. The data are compared to results obtained in e+e- collisions and to
previous DIS measurements as well as to leading-logarithm parton-shower Monte
Carlo predictions. The scaled momentum distributions of charged particles in
jets have been also measured for dijet photoproduction with the ZEUS detector
at HERA using an integrated luminosity of 359 pb-1. The distributions are
compared to predictions based on perturbative QCD carried out in the framework
of the modified leading-logarithmic approximation (MLLA) and assuming local
parton-hadron duality (LPHD). The universal MLLA scale, Lambda_ eff, and the
LPHD parameter, kappa^ch, are extracted.
