All-charm tetraquark in front form dynamics

We study all-charm tetraquarks in the front form of Hamiltonian dynamics using many-body basis function approach known as light-front quantization. The model contains transverse and longitudinal confining potentials a one-gluon-exchange effective potential. calculate masses two-charm-two-anticharm states focusing on lowest state. also two-quark four-quark estimates meson-meson breakup threshold. results suggest that state is not tightly bound tetraquark. discuss implications cluster decomposition principle for theories formulated light present our treatment identical particles together with color-singlet restrictions space quantum states.