to apply our method to the process of the creation of the baryon number of the universe via the leptogenesis. In fact, the result indicates that the CP-violating Majorana phases for the leptogenesis come from $a_{2,3}$ and $b_{2,3}$ (see Eq.(\[Eq:Delta\])) although there is no Majorana CP violation for flavor neutrinos if the above relations are satisfied.

To see how the baryon-photon ratio in the universe via the leptogenesis scenario can be predicted by the use of our requirement on the Dirac neutrino masses for the maximal CP violation, we provide a preliminary result as a viable example. First of all, we summarize the recipes, which are known as follows [@leptogenesis; @FlavoredLeptogenesis]:

-   The CP asymmetry parameters from the decay of the lightest right-handed neutrino $N_1$ (we assume $M_1 \ll M_2$) is obtained from $$\begin{aligned}
    \epsilon_i= -\frac{3M_1}{16\pi v^2}\frac{{\rm Im}[a_i^\ast b_i(a_1^\ast b_1 + a_2^\ast b_2 + a_3^\ast b_3)]}{\vert a_1 \vert^2+\vert a_2 \vert^2+\vert a_3 \vert^2},\end{aligned}$$ where $i=e,\mu,\tau=1,2,3$ and $v \simeq 174$ GeV.

-   The baryon number in the co-moving volume is calculated to be $$\begin{aligned}
    Y_B \simeq -\frac{12}{37 g_\ast} \left [(\epsilon_e+\epsilon_\mu)\eta\left(\frac{417}{589}(\vert a_1\vert^2 + \vert a_2\vert^2 )\right) + \epsilon_\tau \eta\left(\frac{390}{589} \vert a_3 \vert^2\right)  \right],\end{aligned}$$ for $10^9 \le M_1 {\rm [GeV]} \le 10^{12}$ where washout 