2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/207115The inclusive production rate of phi mesons from the decay of b hadrons produced in Z0 decays was measured to be Br(b->phi+X) = 0.0282+-0.0013(stat.)+-0.0019(syst.), using data collected by the OPAL detector at LEP.12 pages, 3 figures, submitted to Phys. Lett. BHigh Energy Physics - Experimenttext