Construction of lepton mass matrices and TeV-scale phenomenology in the minimal left-right symmetric model

Abstract

We develop a systematic procedure of constructing lepton mass matrices that satisfy all the experimental constraints in the light lepton sector of the minimal left-right symmetric model with type-I seesaw dominance. This method is unique since it is applicable to the most general cases of type-I seesaw with complex electroweak vacuum expectation values in the model. With this method, we investigate the TeV-scale phenomenology in the normal hierarchy without fine-tuning of model parameters, focusing on the charged lepton flavour violation, neutrinoless double beta decay, and electric dipole moments of charged leptons. We examine the predictions for typical ranges of associated observables such as branching ratios of rare lepton decays, and study how those experimental constraints affect the model parameter space. The most notable result is that the regions of parameter space that allow small light neutrino masses have been constrained by the present experimental bounds from charged lepton flavour violation. Furthermore, we also find that the mass of the lightest heavy neutrino should be relatively small in order to satisfy those experimental constraints.

References in corpus (16)

• Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron
• Electroweak-Scale Resonant Leptogenesis
• Left-Right Symmetry at LHC
• Physics at Super B Factory
• General CP Violation in Minimal Left-Right Symmetric Model and Constraints on the Right-Handed Scale
• Muon conversion to electron in nuclei in type-I seesaw models
• Neutrinoless Double Beta Decay within QRPA with Proton-Neutron Pairing
• Lepton number and flavour violation in TeV-scale left-right symmetric theories with large left-right mixing
• Left-Right Symmetry: from Majorana to Dirac
• Charged Lepton Flavour Violation in Supersymmetric Low-Scale Seesaw Models
• The Scalar Triplet Contribution to Lepton Flavour Violation and Neutrinoless Double Beta Decay in Left-Right Symmetric Model
• Multi-isotope degeneracy of neutrinoless double beta decay mechanisms in the quasi-particle random phase approximation
• Neutrinoless Double Beta Decay, the Inverted Hierarchy and Precision Determination of theta(12)
• Duality in Left-Right Symmetric Seesaw Mechanism
• Charged Lepton Flavour Violation and Neutrinoless Double Beta Decay in Left-Right Symmetric Models with Type I+II Seesaw
• Perspectives for Detecting Lepton Flavour Violation in Left-Right Symmetric Models