Motivated by the discovery of fully open-flavor tetraquark states X0(2900) and X1(2900) by the LHCb Collaboration, the magnetic dipole moment of the X1(2900) state with the quantum numbers J P = 1 − is determined in the diquark-antidiquark model using the light-cone sum rules. The magnetic moments of hadrons encompasses useful knowledge on the distributions of charge and magnetization their inside, which can be used to better understand their geometrical shapes and quark-gluon organizations. The observation of the X0(2900) and X1( 2900) as the first two fully open-flavor multiquark states has opened a new window for investigation of the exotic states. The obtained results in the present study may shed light on the future experimental and theoretical searches on the properties of fully open-flavor multiquark states.
Motivated by the recent observation of the tetraquark T + cc , we investigate the magnetic dipole moments of the possible strange partners, TQQqs and TQQss, with the spin-parity J P = 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, meaning that there are more states with the same quark contents but different configurations. 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.
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