Title: Quark-exchange contribution to the European Muon Collaboration effect in nuclear matter
Abstract: Fermi statistics require that all quarks in a nucleus be antisymmetrized, and hence that quarks belonging to different nucleons be exchanged in proportion to the degree of nucleon overlap. This leads to a shift in the distribution of quark momentum relative to that in isolated nucleons, and hence to a shift in the structure function ${F}_{2}$(x). This paper extends previous work on the European Muon Collaboration (EMC) effect for the trinucleon system to systems with large numbers of nucleons. For large N, certain divergences were encountered and traced to contributions arising from unlinked quark clusters. After renormalization a smooth N\ensuremath{\rightarrow}\ensuremath{\infty} limit was obtained. The conclusion derived in the previously considered N=3 case is upheld: Quark exchange is very important---perhaps even dominant---in calculating the deviation away from unity of the ratio of the nuclear structure function to that of a free nucleon.
Publication Year: 1988
Publication Date: 1988-07-01
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
Access and Citation
Cited By Count: 12
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