A model prediction for polarized antiquark flavor asymmetry
نویسندگان
چکیده
Polarized flavor asymmetry ∆¯ u/∆ ¯ d is investigated in a meson-cloud model. A polarized nucleon splits into a ρ meson and a baryon, then the polarized ρ meson interacts with the virtual photon. Because of the difference between the longitudinally polarized distributions ∆¯ u and ∆ ¯ d in ρ, the polarized flavor asymmetry is produced in the nucleon. In addition, we show that the g 2 part of ρ contributes to the asymmetry especially at medium x with small Q 2 .
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