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arxiv: hep-ph/9702370 · v3 · pith:GXKFWZOYnew · submitted 1997-02-19 · ✦ hep-ph

Lambda_b polarization in the Z boson decays

classification ✦ hep-ph
keywords lambdabaryonspolarizationannihilationasymmetrybaryonbeautyboson
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In the framework of the perturbative QCD and the diquark model of baryons we have obtained the fragmentation functions for heavy quark that split into polarized Lambda_b baryons. We predict the longitudinal polarization asymmetry for the prompt Lambda_b produced in electron-positron annihilation at the Z resonance and estimate the spin-1/2 and spin-3/2 beauty baryon production rate.

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