  We present the correlation of low energy CP phases, both Dirac and Majorana,
and the lepton asymmetry for the baryon asymmetry in the universe, with a
certain class of Yukawa matrices that consist of two right-handed neutrinos and
include one texture zero in themselves. For cases in which the amount of the
lepton asymmetry $Y_L$ turns out to be proportional to $\theta_{13}^2$, we
consider the relation between two types of CP phases and the relation of $Y_L$
versus the Jarlskog invariant or the amplitude of neutrinoless double beta
decay as $\theta_{13}$ varies.
