2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41727Recent progress in Heavy Flavour Production phenomenology are discussed. In particular, the long-standing discrepancy of the Tevatron b production data is considered. It is shown that a better use of e^+e^- data in constraining the effect of fragmentation reduces the discrepancy considerably.13 pages, Latex, 8 figures. Invited talk at the 6-th International Workshop on Heavy Quarks and Leptons, May 27/June 1, 2002, Vietri s/m, Salerno, ItalyHigh Energy Physics - Phenomenologytext