A model prediction for polarized antiquark flavor asymmetry

Polarized flavor asymmetry Delta(u) over bar/Delta(d) over bar is investigated in a meson-cloud model. A polarized nucleon splits into a rho meson and a baryon, then the polarized rho meson interacts with the virtual photon. Because of the difference between the longitudinally polarized distributions Delta(u) over bar and Delta(d) over bar in rho, the polarized flavor asymmetry is produced in the nucleon. In addition, we show that the g(2) part of rho contributes to the asymmetry especially at medium x; with small Q(2).