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The magnetic moments of the recently observed resonance $X_b(5568)$ by DOCollaboration and its partner with charm quark are calculated in the frameworkof the light cone QCD sum rules, by assuming that these resonances arerepresented as tetra--quark states with quantum numbers $J^{PC}=1^{+\pm}$. Themagnetic moment can play critical role in determination of the quantum numbers,as well as giving useful information about the inner structure of these mesons.

Magnetic moment of $X_Q$ state with $J^{PC}=1^{+\pm}$ in light cone QCD sum rules