Speaker
Description
Masses of the triply heavy tetraquarks of all flavor compositions are calculated within the relativistic quark model, based on the quasipotential approach and QCD. Tetraquark is treated as a bound state of the nonobservable non-pointlike diquark and antidiquark. The relativistic quasipotential equation takes into account all relativistic corrections (both spin--dependent and spin--independent) and the internal structure of the diquarks via the insertion of calculated diquark--gluon form-factors. The calculated masses of tetraquarks are compared with the strong fall--apart decay thresholds into pair of heavy and heavy--light mesons. The states that lie slightly above or under such thresholds and thus could be observed as narrow resonances in other decay modes are determined.
