Exploring $X(5568)$ as a meson molecule

Understand

The parameters, i.e.

• the mass and current coupling of the exotic $X(5568)$ state observed by the D0 Collaboration as well as the decay width of the process $X \to B_s^{0}\pi^{+}$ are explored using $B\bar{K}$ molecule assumption on its structure.
• Employed computational methods include QCD two-point and light-cone sum rules, latter being considered in the soft-meson approximation.
• The obtained results are compared with the data of the D0 Collaboration as well as with the predictions of the diquark-antidiquark model.