Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2005-10-11
Phys.Rev. C73 (2006) 045201
Physics
Nuclear Physics
Nuclear Theory
18 pages, 9 figures
Scientific paper
10.1103/PhysRevC.73.045201
Calculations of nuclear Structure Functions (SF) F_k^A(x,Q^2) routinely exploit a generalized convolution, involving the SF for nucleons F_k^N and the linking SF f^{PN,A} of a fictitious nucleus, composed of point-particles, with the latter usually expressed in terms of hadronic degrees of freedom. For finite Q^2 the approach seemed to be lacking a solid justification and the same is the case for recently proposed, effective nuclear parton distribution functions (pdf), which exactly reproduce the above-mentioned hadronically computed F_k^A. Many years ago Jaffe and West proved the above convolution in the Plane Wave Impulse Approximation (PWIA) for the nuclear components in the convolution. In the present note we extend the above proof to include classes of nuclear Final State Interactions (FSI). One and the same function appears to relate parton distribution functions (pdf) in nuclei and nucleons, and SF for nuclear targets and for nucleons. That relation is the previously conjectured one,with an entirely different interpretation of f^{PN,A}. We conclude with an extensive analysis of moments of nuclear SF based on the generalized convolution. Characteristics of those moments are shown to be quite similar to the same for a nucleon. We conclude that the above evidences asymptotic freedom of a nucleon in a medium and not of a composite nucleus.
Rinat A. S.
Taragin M. F.
No associations
LandOfFree
On the relation between nuclear and nucleon Structure Functions and their moments does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the relation between nuclear and nucleon Structure Functions and their moments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the relation between nuclear and nucleon Structure Functions and their moments will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-48765