Jian-Jun Yang

Quark structure ofΛfromΛpolarization inZdecays

The flavor and spin structure for the quark distributions of the

Flavor and spin structure of octet baryons at large x

\ensuremath{\Lambda}

THE NON-PERTURBATIVE EFFECT ON R = SIGMA L / SIGMA T FROM QCD VACUUM

baryon is studied in a perturbative QCD (PQCD) analysis and in the SU(6) quark-diquark model, and then applied to calculate the

Ratio of

\ensuremath{\Lambda}

\bar{\Lambda}/\Lambda

polarization of semi-inclusive

in Semi-inclusive Electroproduction

\ensuremath{\Lambda}

Ratio of anti-Lambda / Lambda in semiinclusive electroproduction

production in

Mass suppression in octet baryon production

{e}^{+}{e}^{\ensuremath{-}}

Comparisons between additional parton evolution and Q(2)-rescaling models based on recombination effect

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 give a good description of the data by taking into account the suppression of quark helicities compared to the naive SU(6) quark model spin distributions. Further information is required for a clean distinction between different predictions concerning the flavor and spin structure of the

The non-perturbative effect on R=σL/σT from QCD vacuum1

\ensuremath{\Lambda}.