Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2006-05-24
Phys.Lett.B642:210-217,2006
Physics
Nuclear Physics
Nuclear Theory
8 pages, 9 figures
Scientific paper
10.1016/j.physletb.2006.08.076
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 quark-diquark equations in a confining Nambu--Jona-Lasinio 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 light-cone 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.
Bentz Wolfgang
Cloët Ian C.
Thomas Anthony W.
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