  Quantitative understanding of CP violation is extremely important as
naturalness reasoning strongly suggests that new physics should be accompanied
by beyond the Standard Model CP-odd phases. In 2019 LHCb made the first $5
\sigma$ discovery of CP violation in the charm system, leading to the new world
average $\Delta a_{CP}^{\mathrm{dir}} = -0.00161 \pm 0.00028$. While some
calculations have found this observation as requiring new physics, we suggest
that scalar resonances nearby to $m_{D^0}$, in particular, $f_0(1710)$ and/or
$f_0(1790)$ cause enhancements for CP violation within the SM. Thereby, our
calculations based on the Standard Model suggest compatibility with the LHCb
observations for now. However, experimental information especially on
$f_0(1790)$ is rather sparse limiting our accuracy and further data on these
resonances is strongly advocated.
