Abstract
Recently there has been considerable speculation concerning the possibility of sizeable strange quark matrix elements in the nucleon. Although a constituent quark model of the nucleon contains only three constituent quarks and only up and down flavors, these constituent quarks have considerable sub-structure including gluons and quark-antiquark pairs. In this way, even the constituent quark model has the capability to incorporate the presence of strange quark-antiquark pairs in the quark “sea”.1 Much of this discussion is motivated by the existence of some experimental information indicating sizeable strange quark effects in various observable properties of the nucleon: e.g., mass and spin.
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