2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38042Several recent results of the ALEPH Collaboration covering different aspects of baryon production on the Z resonance are presented. In particular production rates of hyperons, the full kinematical reconstruction of the Lambda_b, observation of Xi_b in its semileptonic decay, and the measurements of the polarization of Lambda and Lambda_b baryons are discussed.10 pages, 8 postscript figures, uses here.sty, epsfig.styHigh Energy Physics - Experimenttext