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Using the QCD sum rule approach we investigate the possible four-quarkstructure for the new observed $B_{s}^0\pi^\pm$ narrow structure (D0). We use adiquak-antidiquark scalar current and work to the order of $m_s$ in full QCD,without relying on $1/m_Q$ expansion. Our study indicates that although it ispossible to obtain a stable mass in agreement with the state found by the D0collaboration, a more constraint analysis (simultaneous requirement of the OPEconvergence and the dominance of the pole on the phenomenological side) leadsto a higher mass. We also predict the masses of the bottom scalar tetraquarkresonances with zero and two strange quarks.

A QCD sum rule study for a charged bottom-strange scalar meson