Flavor exotic triply-heavy tetraquark states in AdS/QCD potential

We study the S-wave mass spectra of flavor exotic triply-heavy tetraquark states $cc\overline{c}\overline{q}$ , $cc\overline{b}\overline{q}$ , $bb\overline{c}\overline{q}$ and $bb\overline{b}\overline{q}$ . We adopt a diquark–antidiquark scheme to solve Schrödinger equation. The calculations are carried out in a nonrelativistic quark model with a color interaction described by a potential computed in AdS/QCD. The AdS/QCD potential model consists of a central potential which reflects short distance and large distance behaviour of QCD, spin dependent term for hyperfine splitting and a constant term. We find stable state candidates in the $cc\overline{c}\overline{q}$ sector whereas in the $cc\overline{b}\overline{q}$ , $bb\overline{c}\overline{q}$ and $bb\overline{b}\overline{q}$ sectors all the states lie above corresponding S-wave meson-meson thresholds.