10,946 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
Nucleon-Nucleon Correlations and Final State Interaction in Inclusive Quasi-Elastic Electron Scattering off Nuclei at x>1
Inclusive quasi-elastic electron scattering off nuclei is investigated at
high momentum transfer (Q^2>1 (GeV/c)^2) and x>1 adopting a consistent
treatment of nucleon-nucleon correlations in initial and final states. It is
shown that in case of light as well as complex nuclei the inclusive cross
section at 1.3<x<2 is dominated by the absorption of the virtual photon on a
pair of correlated nucleons and by their elastic rescattering in the continuum,
whereas at x>2 it is governed by the rescattering of the outgoing
off-mass-shell nucleon in the complex optical potential generated by the ground
state of the residual (A-1)-nucleon system.Comment: 06100 Perugia, Italy (b) Istituto Nazionale di Fisica Nucleare,
Sezione Sanita', Viale Regina Elena 299, I-00161 Roma, Italy 8 pages,
preprint INFN-ISS 94/1, January 1994 (to appear in Phys. Lett. B
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
Do Social Relations Affect Economic Welfare? A Microeconomic Empirical Analysis
Over the last few years, many studies have shown that social networks affect the socioeconomic development. This paper presents evidence, through the Italian microdata representative of the entire Italian population, that the quality and quantity of interpersonal relations of agents can increase their economic welfare. Two proxies of interpersonal relations at an individual level are considered: a proxy for the density and one for the quality of network structure of personal contacts. Both seem to have a positive effect on the level of household economic welfare of agents. This result proves robust to the inclusion of a variety of control variables and to the use of different econometric methods.Networks, Social Interactions, Household Economic Welfare, Microdata, Fuzzy Logic
Creative Destruction and Cultural Lag in the Digital Age
Recently, there has been renewed interest in the two ideas of \u201ccreative destruction\u201d and \u201ccultural lag\u201d both brought together in this article to analyze cutting-edge changes in the digital world, especially as they relate to consumption. Several studies have documented that we are increasingly living in a hybridized environment of swiftly evolving devices and technologies. Within this context, cultural lag refers both to the conflict between digital versus material consumerist developments, as well as to the subsequent delays in social understanding. Creative destruction describes the introduction of new forms of consumption that eliminate existing ones. However while all destruction tends to lead to cultural lag, this is especially true in the case of creative destruction. The article will also suggest at the end that not all destruction, especially, but not exclusively, as it relates to the environment, is necessarily creative. It can also be mainly, if not exclusively and totally, destructive
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