EMC and polarized EMC effects in nuclei |
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Authors: | I.C. Cloë t,W. Bentz,A.W. Thomas |
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Affiliation: | 1. Special Research Centre for the Subatomic Structure of Matter and Department of Physics and Mathematical Physics, University of Adelaide, SA 5005, Australia;2. Jefferson Lab, 12000 Jefferson Avenue, Newport News, VA 23606, USA;3. Department of Physics, School of Science, Tokai University, Hiratsuka-shi, Kanagawa 259-1292, Japan |
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Abstract: | We determine nuclear structure functions and quark distributions for 7Li, 11B, 15N and 27Al. 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. |
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Keywords: | 24.85.+p 25.30.Mr 24.10.Jv 11.80.Jy 12.39.Ki |
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