Abstract
Using a relativized diquark model Hamiltonian, we calculate the masses of J^{PC}=0^{++} ground-state tetraquarks in the following systems: b s {bar{b}} {bar{s}}, bb {bar{n}} {bar{n}} (n=u, d), bb {bar{s}} {bar{s}}, cc{bar{c}} {bar{c}}, b b {bar{b}} {bar{b}}, b c{bar{b}} {bar{c}} and b b {bar{c}} {bar{c}}. We also compute extensive spectra for the fully-heavy quark flavour combinations. Finally, as a test of the diquark model approach, we compute the masses of fully-heavy baryons in the diquark model. Our results may be compared soon to the forthcoming experimental data for fully-heavy three-quark systems.
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