Study of the ${X^\pm(5568)}$ state with semileptonic decays of the ${B_s^0}$ meson

  title={Study of the \$\{X^\pm(5568)\}\$ state with semileptonic decays of the \$\{B\_s^0\}\$ meson},
  author={D{\o} Collaboration},
We present a study of the $X^\pm(5568)$ using semileptonic decays of the $B_s^0$ meson using the full Run II integrated luminosity of 10.4 fb$^{-1}$ in proton-antiproton collisions at a center of mass energy of 1.96\,TeV collected with the D0 detector at the Fermilab Tevatron Collider. We report evidence for a narrow structure, $X^\pm(5568)$, in the decay sequence $X^\pm(5568) \to B_s^0 \pi^\pm$ where $B_s^0 \rightarrow \mu^\mp D_s^\pm \, \mathrm{X}$, $D_s^\pm \rightarrow \phi \pi^{\pm}$ which… 



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