  The parameterisation proposed by Casas and Ibarra in the year 2001 have shown
promising role in the extraction of neutrino Yukawa coupling which is a basic
ingredient of the seesaw mechanism generating neutrino mass. We pay special
attention in establishing the crucial role of the Casas-Ibarra (CI)
parameterisation in presence of two different orthogonal matrices, $R=
\textbf{O} \,\rm e^{i {\bf A}}$ and $R= \textbf{O} \,\rm e^{{\bf A}}$ in order
to investigate flavored leptogenesis. In the light of these two choices of the
orthogonal matrix we examine the connection between the low energy and high
energy CP violations along with certain interesting predictions on the low
energy parameters namely, the lightest neutrino mass and the Dirac CP phase
($\delta$). Considering the right handed neutrino (RHN) mass window to be
$10^8$ GeV, we show that Dirac phase leptogenesis is possible with the choices
of these two orthogonal matrices. We choose a nearly degenerate spectrum for
the RHN masses for having a successful leptogenesis. We also emphasize on
presenting a range of the matrix elements of the skew symmetric matrix $
\textbf{A}$. The results obtained in the present analysis underline the
importance of understanding the status of CP violation in the low energy
sector. We also discuss the phenomenological implications of these two case
studies in the context of LFV considering the $\mu \rightarrow e\gamma$ decay
process.
