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In the "Higgs basis" for a generic 2HDM, only one scalar doublet gets anonzero vacuum expectation value and, under the criterion of minimal flavorviolation, the other one is fixed to be either color-singlet or color-octet,which are named as the type-III and type-C models, respectively. In this paper,the charged-Higgs effects of these two models on $B_s^0-\bar{B}_s^0$ mixing arestudied. Firstly, we perform a complete one-loop computation of theelectro-weak corrections to the amplitudes of $B_s^0-\bar{B}_s^0$ mixing.Together with the up-to-date experimental measurements, a detailedphenomenological analysis is then performed in the cases of both real andcomplex Yukawa couplings of charged scalars to quarks. The spaces of modelparameters allowed by the current experimental data on $B_s^0-\bar{B}_s^0$mixing are obtained and the differences between type-III and type-C models areinvestigated, which is helpful to distinguish between these two models.

$B_s^0-\bar{B}_s^0$ mixing within minimal flavor-violating two-Higgs-doublet models