CP violation and baryogenesis due to heavy Majorana neutrinos
- Max-Planck-Institut fuer Physik, Foehringer Ring 6, 80805 Munich (Germany)
We analyze the scenario of baryogenesis through leptogenesis induced by the out-of-equilibrium decays of heavy Majorana neutrinos and pay special attention to CP violation. Extending a recently proposed resummation formalism for two-fermion mixing to decay amplitudes, we calculate the resonant phenomenon of CP violation due to the mixing of two nearly degenerate heavy Majorana neutrinos. Solving numerically the relevant Boltzmann equations, we find that the isosinglet Majorana mass may range from 1 TeV up to the grand unification scale, depending on the mechanism of CP violation and/or the flavor structure of the neutrino mass matrix assumed. Finite temperature effects and possible constraints from the electric dipole moment of electron and other low-energy experiments are briefly discussed. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 543883
- Journal Information:
- Physical Review, D, Vol. 56, Issue 9; Other Information: PBD: Nov 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Charged lepton decays l{sub i}{yields}l{sub j}+{gamma}, leptogenesis CP-violating parameters and Majorana phases
CP violation from the standard model to strings