required due to MFV.

The collider phenomenology in this model is very similar to the discussion on the two scalar doublet model. The LEPII constraints allow a larger parameter space due to the smaller mass splitting. The main differences for the Tevatron is that the cross sections we have discussed are increased by an order of magnitude due to the larger flavour representation. Slightly smaller production cross sections through $b$ quark fusion with low $p_T$ spectator $b$ quarks are expected at LHC as the normalization of the Gell Mann matrix decreases the cross section by a factor of three.

We consider speculation on the UV origin of such a $S_8$ doublet, or other accompanying non flavour singlet doublets that transform under the $\rm SU(3)_{U_R}$ as an $\bf 8$ to be premature and beyond the scope of this work.

Conclusions
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In this paper we discussed the new (i.e., beyond the minimal standard model) physics in the region of parameter space for which the two scalar doublet model with MFV gives the additional contributions to $B_q- {\bar B}_q$ mixing that are hinted at by the data on flavor physics in the $B$-sector. It requires additional light scalars that may be discovered 