Radiative corrections to neutrino mixing and CP violation in the minimal seesaw model with leptogenesis

Radiative corrections to neutrino mixing and CP violation are analyzed in the minimal seesaw model with two heavy right-handed neutrinos. We find that textures of the effective Majorana neutrino mass matrix are essentially stable against renormalization effects. Taking account of the Frampton-Glashow-Yanagida ansatz for the Dirac neutrino Yukawa coupling matrix, we calculate the running effects of light neutrino masses, lepton flavor mixing angles and CP-violating phases for both

m_1 =0

(normal mass hierarchy) and

m_3 =0

(inverted mass hierarchy) cases in the standard model and in its minimal supersymmetric extension. Very instructive predictions for the cosmological baryon number asymmetry via thermal leptogenesis are also given with the help of low-energy neutrino mixing quantities.

14.60.Pq
25.30.Pt
11.30.Er
neutrino: mass
neutrino: mixing angle
radiative correction
CP: violation
seesaw model: minimal
neutrino: right-handed
mass: texture

References(57)

Figures(0)

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