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Abstract: The flavor asymmetry of the nucleon sea is discussed in an unquenched quarkmodel for baryons in which the effects of quark-antiquark pairs u anti-u, danti-d and s anti-s are taken into account in an explicit form. The inclusionof q anti-q pairs leads automatically to an excess of anti-d over anti-u quarksin the proton, in agreement with experimental data.



Autor: R. Bijker ICN-UNAM, Mexico, E. Santopinto INFN, Genova

Fuente: https://arxiv.org/



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