Quark structure of Λ from Λ polarization in Z decays

@article{Ma2000QuarkSO,
  title={Quark structure of $\Lambda$ from $\Lambda$ polarization in Z decays},
  author={Bo Qiang Ma and Ivan Schmidt and Jian-jun Yang},
  journal={Physical Review D},
  year={2000},
  volume={61},
  pages={034017}
}
The flavor and spin structure for the quark distributions of the $\ensuremath{\Lambda}$ baryon is studied in a perturbative QCD (PQCD) analysis and in the SU(6) quark-diquark model, and then applied to calculate the $\ensuremath{\Lambda}$ polarization of semi-inclusive $\ensuremath{\Lambda}$ production in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation near the Z pole. It is found that the quark-diquark model gives a very good description of the available experimental data. The PQCD model can also… 
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