7 research outputs found
Theoretical aspects of the CEBAF 89-009 experiment on inclusive scattering of 4.05 GeV electrons from nuclei
We compare recent CEBAF data on inclusive electron scattering on nuclei with
predictions, based on a relation between structure functions (SF) of a nucleus,
a nucleon and a nucleus of point-nucleons. The latter contains nuclear
dynamics, e.g. binary collision contributions in addition to the asymptotic
limit. The agreement with the data is good, except in low-intensity regions.
Computed ternary collsion contributions appear too small for an explanation. We
perform scaling analyses in Gurvitz's scaling variable and found that for
, ratios of scaling functions for pairs of nuclei differ by less
than 15-20% from 1. Scaling functions for are, for increasing ,
shown to approach a plateau from above. We observe only weak -dependence
in FSI, which in the relevant kinematic region is ascribed to the diffractive
nature of the NN amplitudes appearing in FSI. This renders it difficult to
separate asymptotic from FSI parts and seriously hampers the extraction of
from scaling analyses in a model-independnent fashion.Comment: 11 p. Latex file, 2 ps fig
Correlation Effects in the Final-State Interaction for Quasielastic Scattering
Color transparency predicts that, in reactions at large , the
final-state interaction becomes weaker than the reference value predicted from
the free-nucleon cross section. This reference value is usually evaluated in
the dilute-gas approximation to Glauber's multiple-scattering theory. We derive
the leading-order correction taking into account two-body correlations. Large
cancellations are found so that the overall correlation effect is small.Comment: ([email protected]), 8 pages, 2 figures on the request
from the author