Exploring the magnetic dipole moments of $$ {T}_{QQ\overline{q}\overline{s}} $$ and $$ {T}_{QQ\overline{s}\overline{s}} $$ states in the framework of QCD light-cone sum rules

Abstract

Abstract Motivated by the recent observation of the tetraquark $$ {T}_{cc}^{+} $$ T cc + , we investigate the magnetic dipole moments of the possible single and double strange partners, $$ {T}_{QQ\overline{q}\overline{s}} $$ T QQ q ¯ s ¯ and $$ {T}_{QQ\overline{s}\overline{s}} $$ T QQ s ¯ s ¯ , with the spin-parity JP = 1+ by means of the QCD light-cone sum rules. To this end, we model these states as diquark-antidiquark states with different organizations and interpolating currents. The results of magnetic dipole moments obtained using different diquark-antidiquark structures differ from each other, considerably. The magnetic dipole moment is the leading-order response of a bound system to a soft external magnetic field. Therefore, it provides an excellent platform for investigation of the inner structures of hadrons governed by the quark-gluon dynamics of QCD.