Orateur
M.
Aharon Levy
Description
Charged particle production has been studied in neutral current deep
inelastic ep scattering with the ZEUS detector at HERA using an integrated
luminosity of 0.44 fb-1. Distributions of scaled momenta in the Breit
frame are presented for particles in the current fragmentation region. The
evolution of these spectra with the photon virtuality, Q2, is described in
the kinematic region 10 < Q2 < 41000 GeV2. Next-to-leading-order and
modified leading-log- approximation QCD calculations as well as
predictions from Monte Carlo models are compared to the data. The results
are also compared to e+e- annihilation data. The dependences of the
pseudorapidity distribution of the particles on Q2 and on the energy in
the p system, W, are presented and interpreted in the context of the
hypothesis of limiting fragmentation.
Auteur principal
M.
Aharon Levy
