Search for the exotic state $X(5568)$ decaying into $B_{s}^{0} \pi^{\pm}$ at the CMS Experiment

Recently, the D0 Collaboration announced the observation of a new resonant structure in the $B_{s}^{0} \pi^{\pm}$ invariant mass distribution, named $X(5568)$. The $X(5568)$ is a good candidate to be a tetraquark state, and has raised a lot of interest from the theoretical and experimental communities. This work presents the search of the $X(5568)$ state in the $B_{s}^{0} \pi^{\pm}$ system at the CMS Experiment using 19.7 fb$^{-1}$ of $pp$ collisions at 8 TeV collected in 2012. With about 50000 reconstructed $B_{s}^{0}$ mesons, no signal is found around the mass claimed by the D0 Collaboration and upper limits to the production of the possible exotic particle is calculated for different kinematics requirements on the $B_{s}^{0}$, as well as for the mass and width of the state.