We revise the conventional nuclear effects of Fermi motion, binding and pionic effects in deep inelastic lepton scattering using a relativistic formalism for an interacting Fermi sea and the local density approximation to translate results from nuclear matter to finite nuclei. In addition we also consider effects from ϱ-meson renormalization in the nucleus. The use of nucleon Green functions in terms of their spectral functions offers a precise way to account for Fermi motion and binding. On the other hand the use of many-body Feynman diagrams in a relativistic framework allows one to avoid using prescriptions given in the past to introduce relativistic corrections in a nonrelativistic formalism. We show that with realistic nucleon spectral functions and meson nucleus self-energies one can get a reasonable description of the EMC effect for x > 0.15, outside the shadowing region.
Nuclear Physics A
- Pub Date:
- February 1996
- Nuclear Theory;
- High Energy Physics - Phenomenology
- 31 pages, LaTeX, 11 PostScript figures, final version to appear in Nuclear Physics A