Predictions on the neutrinoless double beta decay from the leptogenesis via the LHu flat direction

If the baryon asymmetry in the present universe is generated by decays of the LHu flat direction, the observed baryon asymmetry requires the mass of the lightest neutrino to be much smaller than the mass scale indicated from the atmospheric and solar neutrino oscillations. Such a small mass of the lightest neutrino leads to a high predictability on the rate of the neutrinoless double beta (0νββ) decay. In this letter we show general predictions on the 0νββ decay in the leptogenesis via the LHu flat direction.