Flavor Asymmetry of the Polarized Light Sea: Models vs. Data

preprint2003arXivOpen access

Abstract

The flavor asymmetry of the polarized light sea, Δuˉ−ΔdˉΔ\bar u - Δ\bar d, discriminates between different model calculations of helicity densities. We show that the chiral chromodielectric model, differently from models based on a 1/Nc1/N_c expansion, predicts a small value for this asymmetry, what seems in agreement with preliminary HERMES data.

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