The Flavor and Spin Structure of Hyperons from Quark Fragmentation

Details The Flavor and Spin Structure of Hyperons from Quark Fragmentation The Flavor and Spin Structure of Hyperons from Quark Fragmentation

2000-08-29

arxiv.org/abs/hep-ph/0008295v3

Phys.Rev. D62 (2000) 114009

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 latex pages, 11 figures, a misprint in Table 1 corrected, reference updated, to appear in PRD

Scientific paper

10.1103/PhysRevD.62.114009

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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