Could the observation of X(5568) be a result of the near threshold rescattering effects?

Abstract

We investigate the invariant mass distributions of $$B_s\pi $$ via different rescattering processes. The triangle singularity which appears in the rescattering amplitude may simulate the resonance-like bump around 5568 MeV. However, because the scattering $$B_s^*\pi \rightarrow B_s\pi $$ is supposed to be weak, if the pertinent background is much larger, it would be hard to ascribe the observation of X(5568) to rescattering effects.