2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41127By selecting two-jet like events and employing sensitive observable, we find that two kinds of colour connections at the hard-soft interface lead to significantly differences in hadron states.6 pages, 3 figures (2 in eps, 1 in ps) talk given at XXXI International Symposium on Multiparticle Dynamics, Sep. 1-7, 2001, Datong China URL http://ismd31.ccnu.edu.cn/High Energy Physics - PhenomenologyProbing colour separate singlet states in $e^+ e^-$ annihilation at $Z^0$ poletext