1,735 research outputs found
Slow proton production in semi-inclusive DIS off nuclei: the role of final state interaction
The effects of the final state interaction on the production of slow protons
in semi-inclusive deep-inelastic lepton scattering off nuclei is considered
within the spectator mechanism and a realistic approach in which the
rescattering in the medium of both the recoiling proton and the hadronizing
nucleon debris are taken into account.Comment: 4 pages, 4 figures, to appear in the Proceedings of the "Fifth
International Conference on Perspectives in Hadronic Physics" held at ICTP,
Trieste, 22 - 26 May 200
On the Extraction of the Neutron Spin Structure Functions and the Gerasimov -- Drell -- Hearn Integral from data
Nuclear effects in polarized inelastic electron scattering off polarized
are discussed; in the kinematics of future experiments at CEBAF, Fermi
motion effects are found to be much larger than in deep inelastic scattering.
It is shown that improperly describing nuclear dynamics would lead to the
extraction of unreliable neutron spin structure functions. On the other hand
side, a simple and workable equation relating the Gerasimov -- Drell -- Hearn
Integral for the neutron to the corresponding quantity for is proposed.Comment: 13 pages Latex including 3 postscript figure
Nucleon-Nucleon Correlations and Gribov Inelastic Shadowing in High Energy Collisions
The effects of nucleon-nucleon (NN) short range correlations (SRC) and Gribov
inelastic shadowing (IS) in high energy collisions are illustrated.Comment: 4 pages, 2 figures. Talk given at DIFFRACTION 2010, International
Workshop on Diffraction in High Energy Physics, Otranto, Italy, September
10-15, 201
Time Evolution of Hadronization and Grey Tracks in DIS off Nuclei
The analysis of the grey tracks produced in Deep Inelastic Scattering (DIS)
off nuclei provides important information on the space-time development of
hadronization in nuclear medium. This method is complementary to the
measurement of nuclear attenuation of leading inclusive hadrons. While the
latter is focused on the hadronization dynamics for the quite rare process of
leading hadrons production, the former covers the main bulk of inelastic
events, and its Q^2 dependence is a very sensitive tool to discriminate between
different models of hadronization. Employing the model of perturbative
hadronization developed earlier, we calculate the Q^2 and x_{Bj} dependences of
the number of collisions and relate it to the mean number of grey tracks, using
an empirical relation obtained from the analysis of data from the Fermilab E665
experiment on DIS of muons off the Xe nucleus. We found the number of grey
tracks to rise steeply with Q^2 in good agreement with the experimental data.Comment: 10 pages, 2 figure
A New Approach to y-scaling and the Universal Features of Scaling Functions and Nucleon Momentum Distributions
Some systematic general features of y-scaling structure functions, which are
essentially independent of detailed dynamics, are pointed out. Their physical
interpretation in terms of general characteristics, such as a mean field
description and nucleon-nucleon correlations, is given and their relationship
to the momentum distributions illustrated. A new relativistic scaling variable
is proposed which incorporates the momentum dependence of the excitation energy
of the (A-1) system, with the resulting scaling function being closely related
to the longitudinal momemtum distributions and being free from removal-energy
scaling violating effects.Comment: 17 pages, RevTeX, 4 ps Figures, to appear in Physics Letters
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