The flavor asymmetry of the polarized light sea discriminates between different model calculations of helicity densities. We show that the chiral chromodielectric model, differently from models based on a 1/Nc expansion, predicts a small value for this asymmetry, what seems in agreement with preliminary HERMES data.
Flavor asymmetry of the polarized light sea: Models versus data
CALARCO, Tommaso;DRAGO, Alessandro;
2003
Abstract
The flavor asymmetry of the polarized light sea discriminates between different model calculations of helicity densities. We show that the chiral chromodielectric model, differently from models based on a 1/Nc expansion, predicts a small value for this asymmetry, what seems in agreement with preliminary HERMES data.File in questo prodotto:
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