  We investigate a resonant leptogenesis scenario by quasi-degenerate
right-handed neutrinos which have TeV-scale masses. Especially, we consider the
case when two right-handed neutrinos are responsible to leptogenesis and the
seesaw mechanism for active neutrino masses, and assume that the CP violation
occurs only in the mixing matrix of active neutrinos. In this case the sign of
the baryon asymmetry depends on the Dirac and Majorana CP phases as well as the
mixing angle of the right-handed neutrinos. It is shown how the yield of the
baryon asymmetry correlates with these parameters. In addition, we find that
the effective neutrino mass in the neutrinoless double beta decay receives an
additional constraint in order to account for the observed baryon asymmetry
depending on the masses and mixing angle of right-handed neutrinos.

High Energy Physics - Phenomenology;Cosmology and Nongalactic Astrophysics;High Energy Physics - Experiment