EMC and polarized EMC effects in nuclei
Abstract
We determine nuclear structure functions and quark distributions for ^{7}Li, ^{11}B, ^{15}N and ^{27}Al. For the nucleon bound state we solve the covariant quarkdiquark equations in a confining NambuJonaLasinio model, which yields excellent results for the free nucleon structure functions. The nucleus is described using a relativistic shell model, including mean scalar and vector fields that couple to the quarks in the nucleon. The nuclear structure functions are then obtained as a convolution of the structure function of the bound nucleon with the lightcone nucleon distributions. We find that we are readily able to reproduce the EMC effect in finite nuclei and confirm earlier nuclear matter studies that found a large polarized EMC effect.
 Publication:

Physics Letters B
 Pub Date:
 November 2006
 DOI:
 10.1016/j.physletb.2006.08.076
 arXiv:
 arXiv:nuclth/0605061
 Bibcode:
 2006PhLB..642..210C
 Keywords:

 24.85.+p;
 25.30.Mr;
 24.10.Jv;
 11.80.Jy;
 12.39.Ki;
 Quarks gluons and QCD in nuclei and nuclear processes;
 Muon scattering;
 Relativistic models;
 Manybody scattering and Faddeev equation;
 Relativistic quark model;
 Nuclear Theory;
 High Energy Physics  Phenomenology;
 Nuclear Experiment
 EPrint:
 8 pages, 9 figures