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Assuming only a hierarchical structure of the heavy Majorana neutrino massesand of the neutrino Dirac mass matrix m_D of the see-saw mechanism, we findthat in order to produce the observed baryon asymmetry of the Universe vialeptogenesis, the scale of m_D should be given by the up-quark masses. Leptonflavor violating decays \mu \to e + \gamma, \tau \to \mu + \gamma and \tau \toe + \gamma are considered and a characteristic relation between their decayrates is predicted. The effective Majorana mass in neutrinoless double betadecay depends on the CP violating phase controlling the leptogenesis if one ofthe heavy Majorana neutrinos is much heavier than the other two. Successfulleptogenesis requires a rather mild mass hierarchy between the latter. Thecompatibility of this hierarchical see-saw model with the low energy neutrinomixing phenomenology requires that the mixing angle limited by the CHOOZ andPalo Verde experiments should be relatively large, \sin^2\theta_3 \gtap 0.01.The CP violation effects in neutrino oscillations can be observable. Ingeneral, there is no direct connection between the latter and the CP violationin leptogenesis. If the CP violating phases of the see-saw model satisfycertain relations, the baryon asymmetry of the Universe and the rephasinginvariant J_{CP} which determines the magnitude of the CP violation effects inneutrino oscillations, depend on the same CP violating phase and their signsare correlated.Comment: 19 pages, 1 figure. Few clarifying comments adde

On the connection of leptogenesis with low energyCPviolation and lepton flavor violating charged lepton decays