Speakers
Dr
Lydia Shcheglova
(Nuclear Physics Institute of Moscow State University)
Lydia Shcheglova
(Moscow State University)
Description
The 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 centre-of-mass frame. The
KNO-scaling properties of the data were investigated and the energy
dependence 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
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, k^ch , are extracted.
Primary authors
Lydia Shcheglova
(Moscow State University)
Monica Turcato ZEUS Collaboration
(Hamburg University)
