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arXiv · hep-ph/0112221

A model prediction for polarized antiquark flavor asymmetry

S. Kumano
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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.

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S. Kumano. 2001-12-17. A model prediction for polarized antiquark flavor asymmetry. https://doi.org/10.1142/s0217751x03014897

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