Omega Meson Cloud and the Proton's Light Anti-Quark Distribution

Abstract

We use the meson cloud model of the nucleon to calculate distribution functions for $(\bar{d}-\bar{u})$ and $\bar{d}/\bar{u}$ in the proton. Including the effect of the omega meson cloud, with a coupling constant $g_{\omega }^2/4\pi \approx 8$, allows a reasonably good description of the data.

Comments: 6 pages, 2 figures, LaTex