2024/01/09 by Özdem, U., Azizi, K.
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2401.04798
We conduct a systematic study of the electromagnetic properties of multiquark systems with undetermined internal structures. Motivated by the recent observation of the Tcc+ state, we apply the light-cone version of the QCD sum rule method to extract the magnetic dipole moments of several possible doubly-charmed vector tetraquark states. When analyzing the magnetic dipole moment of these states, they are modeled to have the diquark-antidiquark configurations. The magnetic dipole moments for the members are extracted as μ_T_cc u d = 1.17+0.44-0.32 μN, μ_T_cc u s = 1.35+0.50-0.37 μN, μ_T_cc d s = -2.69+1.02-0.75 μN, μ_T_cc u u = 1.33+0.56-0.40 μN, μ_T_cc d d = 1.41+0.57-0.43 μN and μ_T_cc s s = 1.44+0.53-0.41 μN. Comparing the results obtained for the magnetic dipole moments of the T_cc u d state with the T_cc u s state, the U-symmetry is seen to be broken at about %15, while for the T_cc d d and T_cc s s states, this symmetry is minimally broken. The obtained results may be useful to determine the true nature of these new interesting states.