Exchange of unparticle stuff of dimension $d_\U$ with FCNC interaction can induce $M^{ 12,u}$ and $\Gamma^{ 12,u}$ causing meson and anti-meson mixing with the relation $\Gamma^{ 12,u}/M^{ 12,u} = 2 \tan(\pi d_\U)$. We show that this type of unparticle contribution can provide the much needed large $\Gamma^{ 12}_s$ to explain the recently observed anomalously large dimuon asymmetry in $B_s -\bar B_s$ system reported by D0 collaboration. The same interaction can also accommodate large mixing induced CP violation in $B_s \to J/\psi \phi$ indicated by CDF and D0 data. Experimental data can provide constraints on the unparticle dimension and scale.
Categories: hep-ph hep-ex