Flavor asymmetry of the nucleon sea in an unquenched quark model

R. Bijker, E. Santopinto

Published 2008-09-12Version 1

We discuss the flavor asymmetry of the nucleon in an unquenched quark model for baryons in which the effects of quark-antiquark pairs (u anti-u, d anti-d and s anti-s) are taken into account in an explicit form. It is shown that the inclusion of q anti-q pairs leads to an excess of anti-d over anti-u quarks in the proton.