Summary
We examine the standard-parton-model unitarity relations in the context of a covariant quark parton model which incorporates confinement in a very naive way. We also make a deeper analysis than was made in recent papers by the same authors about the sensitivity of the baryonic structure functions to the confinement mechanism. This new analysis shows that, contrarily to what was stated in those papers, one can expect, because of the confinement, changes in the behaviour of the baryonic structure functions similar to those already found for the meson structure functions. However, because of the different quark content of mesons and baryons, we have not found any connection between the size of these changes for mesons and baryons.
Riassunto
Si esaminano le relazioni di unitarietà nel modello standard a partoni nell’àmbito di un modello covariante partonico dei quark che comprende il confinamento in un modo molto semplice. Si analizza molto piú approfonditamente rispetto ai recenti lavori degli stessi autori la sensibilità delle funzioni di struttura barioniche al meccanismo di confinamento. Questa nuova analisi mostra che, contrariamente a quanto era stato asserito in quei lavori, ci si può aspettare, a causa del confinamento, cambiamenti nel comportamento delle funzioni di struttura barioniche simili a quelli già riscontrati nelle funzioni di struttura mesoniche. Comunque, a causa del diverso contenuto in quark dei mesoni e dei barioni, non si è trovata alcuna connessione fra l’entità di questi cambiamenti per i mesoni e i barioni.
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Alonso, J.L., Azcoiti, V. On a covariant quark parton model with confinement. Nuov Cim A 66, 411–420 (1981). https://doi.org/10.1007/BF02730362
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DOI: https://doi.org/10.1007/BF02730362