The Flavor and Spin Structure of Hyperons from Quark Fragmentation
Bo-Qiang Ma, Ivan Schmidt, Jacques Soffer, Jian-Jun Yang
Abstract
We systematically study the hadron longitudinal polarizations of the octet baryons at large z from quark fragmentations in e+e--annihilation, polarized charged lepton deep inelastic scattering (DIS) process, and neutrino (antineutrino) DIS process, based on predictions of quark distributions for the octet baryons in the SU(6) quark-spectator-diquark model and a perturbative QCD based counting rule analysis. We show that the e+e--annihilation and polarized charged lepton DIS process are able to distinguish between the two different predictions of the hyperon polarizations. We also find that the neutrino/antineutrino DIS process is ideal in order to study both the valence content of the hyperons and the antiquark to hyperon (quark to anti-hyperon) fragmentations, which might be related to the sea content of hyperons.
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