A model prediction for polarized antiquark flavor asymmetry

Details A model prediction for polarized antiquark flavor asymmetry A model prediction for polarized antiquark flavor asymmetry

2001-12-17

arxiv.org/abs/hep-ph/0112221v1

Int.J.Mod.Phys. A18 (2003) 1457-1460

Physics

High Energy Physics

High Energy Physics - Phenomenology

1+4 pages, LaTeX2e, ws-ijmpa.cls, 2 eps figures. Talk given at the 3rd Circum-Pan-Pacific Symposium on High Energy Spin Physic

Scientific paper

10.1142/S0217751X03014897

Polarized flavor asymmetry Delta u-bar/Delta d-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-bar and Delta d-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.

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