Flavor asymmetry of polarized antiquark distributions and semi-inclusive DIS |
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Authors: | B Dressler K Goeke MV Polyakov C Weiss |
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Institution: | Institut für Theoretische Physik II, Ruhr–Universit?t Bochum, 44780 Bochum, Germany, DE
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Abstract: | The –expansion of QCD suggests large flavor asymmetries of the polarized antiquark distributions in the nucleon. This is confirmed
by model calculations in the large– limit (chiral quark–soliton model), which give sizable results for and . We compute the contributions of these flavor asymmetries to the spin asymmetries in hadron production in semi-inclusive
deep–inelastic scattering. We show that the large flavor asymmetries predicted by the chiral quark–soliton model are consistent
with the recent HERMES data for spin asymmetries in charged hadron production.
Received: 30 November 1999 / Published online: 17 March 2000 |
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