A model prediction for polarized antiquark flavor asymmetry
Abstract
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.
Keywords
Cite
@article{arxiv.hep-ph/0112221,
title = {A model prediction for polarized antiquark flavor asymmetry},
author = {S. Kumano},
journal= {arXiv preprint arXiv:hep-ph/0112221},
year = {2009}
}
Comments
1+4 pages, LaTeX2e, ws-ijmpa.cls, 2 eps figures. Talk given at the 3rd Circum-Pan-Pacific Symposium on High Energy Spin Physics, Oct. 8-13, 2001, Beijing, China. To be published in proceedings. Email: [email protected], see http://hs.phys.saga-u.ac.jp/