2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/100665On the basis of the study of inclusive hadronic events, two methods are adopted to determine the number of produced psi(2S) events collected by BES in 2001-2002 run, which is 14 Million with the uncertainty of 4%.14 pages, 5 figuresHigh Energy Physics - Experimenttext