Prospects of discovering stable double-heavy tetraquarks at a Tera-Z factory

Motivated by a number of theoretical considerations, predicting the deeply bound double-heavy tetraquarks T[u¯d¯]{bb}, T[u¯s¯]{bb} and T[d¯s¯]{bb}, we explore the potential of their discovery at Tera-Z factories. Using the process Z→bb¯bb¯, we calculate, employing the Monte Carlo generators MadGraph5_aMC@NLO and Pythia6, the phase space configuration in which the bb pair is likely to fragment as a diquark. In a jet-cone, defined by an invariant mass interval mbb