Stability and leptogenesis in the left-right symmetric seesaw mechanism

Abstract

We analyze the left-right symmetric type I+II seesaw mechanism, where an eight-fold degeneracy among the mass matrices of heavy right-handed neutrinos M_R is known to exist. Using the stability property of the solutions and their ability to lead to successful baryogenesis via leptogenesis as additional criteria, we discriminate among these eight solutions and partially lift their eight-fold degeneracy. In particular, we find that viable leptogenesis is generically possible for four out of the eight solutions.

25 pages, 11 figures, latex; minor changes, published version

References in corpus (3)

• A Minimal Type II Seesaw Model
• Interplay of type I and type II seesaw contributions to neutrino mass
• Quark-Lepton Unification and Eight-Fold Ambiguity in the Left-Right Symmetric Seesaw Mechanism

Cited by in corpus (11)

• Leptogenesis
• Realistic Neutrinogenesis with Radiative Vertex Correction
• Successful Leptogenesis in SO(10) Unification with a Left-Right Symmetric Seesaw Mechanism
• A new, direct link between the baryon asymmetry and neutrino masses
• Testing the Realistic Seesaw Model with Two Heavy Majorana Neutrinos at the CERN Large Hadron Collider
• Flavour-Dependent Type II Leptogenesis
• Large and Almost Maximal Neutrino Mixing within the Type II See-Saw Mechanism
• Probing Neutrino Dirac Mass in Left-Right Symmetric Models at the LHC and Next Generation Colliders
• Triplet Leptogenesis in Left-Right Symmetric Seesaw Models
• Leptogenesis in a Left-Right Symmetric Model with double seesaw
• Towards a more complete description of hybrid leptogenesis