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

The magnetic moments of the recently observed resonance $X_b(5568)$ by DO Collaboration and its partner with charm quark are calculated in the framework of the light cone QCD sum rules, by assuming that these resonances are represented as tetra--quark states with quantum numbers $J^{PC}=1^{+\pm}$. The magnetic moment can play critical role in determination of the quantum numbers, as well as giving useful information about the inner structure of these mesons.
Comment: 15 pages, 2 figures, LaTeX formatted