F0−F0mixing andCPviolation in the general two Higgs doublet model

A phenomenological analysis of the general two Higgs doublet model is presented. Possible constraints of the Yukawa couplings result from the $K^0-K^0,$ $B^0-B^0,$ and $D^0-D^0$ mixings. It is shown that the emerging of various new sources of $\mathrm{CP}$ violation in the model could strongly affect the determination of the unitarity triangle. It could be useful to look for a signal of new physics by comparing the extracted angle $\beta$ from two different ways, such as from the process $\overrightarrow{B}J/\psi K_S$ and from fitting the quantities $|V_{\mathrm{ub}}|,$ $\Delta m_B,$ and $\epsilon .$