1994/10/20 by M. Jeżabek, Marek Jezabek, Jezabek, Marek
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9410334
3 pages (no figures), Karlsruhe Univ. preprint TTP94-19. (Presented at XXVII International Conference on High Energy Physics, 20-27 July 1994, Glasgow, Scotland; to appear in the proceedings.) Latex + ichep.sty after \end{document}. A complete postscript file is available via anonymous ftp at ttpux2.physik.uni-karlsruhe.de (129.13.102.139) as /ttp94-19/ttp94-19.ps
arxiv created 1994/10/20 · openalex publication_date 1994/10/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Compact analytic expressions have been obtained for the first order perturbative QCD corrections to the inclusive spectra of the leptons in the semileptonic decays of polarised heavy quarks. Charmed and beautiful Λ baryons from Z0 decays can be viewed as sources of highly polarised charm and bottom quarks. Charged leptons and neutrinos from Λb and Λc decays can be used in the polarisation studies for the corresponding heavy quarks. Thus our results are applicable for the b quark polarisation measurements at LEP. Short lifetime enables polarisation studies for the top quark. The angular-energy spectra of the charged leptons are particularly useful in this respect whereas the distributions of the neutrinos are sensitive to deviations from the V-A structure of the charged weak current in the decay.