New Constraints on SUSY Flavour Mixing in Light of Recent Measurements   at the Tevatron
  We discuss the implications, for general flavour mixing, of the recent results regarding the new allowed range for mixing in the $B_s$ meson system, as well as the new improved bounds on $BR(\bar{B}_s\to\mu^+\mu^-)$. Constraints on right handed insertions, in particular, improve considerably in the large $\tanb$ regime where the contributions to $B_s$ mixing are dominated by double Higgs penguins. Similarly, the allowed regions of parameter space when varying multiple insertions also decrease significantly. 
John Foster, Ken-ichi Okumura and Leszek Roszkowski