Probing new physics with p plus p- - bs at a muon collider

We show that bottom-strange production at a high-energy muon collider, mu+mu- - bs, is a sensitive probe of new physics. We consider the full set of four-fermion contact interactions that contribute to this process at dimension 6, and discuss the complementarity of a muon collider and of the study of rare B meson decays that also probe said new physics. If a signal were to be found at a muon collider, the forwardbackward asymmetry of the b-jet provides diagnostics about the underlying chirality structure of the new physics. In the absence of a signal at a center of mass energy of 10 TeV, mu+mu- - bs can indirectly probe new physics at scales close to 100 TeV. We also discuss the impact that beam polarization has on the muon collider sensitivity performance.