Neutrino Masses in the Effective Rank-5 Subgroups of E_6 II: Supersymmetric Case

Abstract

We present a complete analysis of the neutral fermion sector of supersymmetric E_6-inspired low energy models containing an extra SU(2), concentrating on the Alternate Left-Right and Inert models. We show that the R-parity conserving scenario always exhibits a large Dirac mass for ν_L with maximal mixing with an isosinglet neutrino, and that R-parity violating scenarios do not change the picture other than allowing further mixing with another isosinglet. In order to recover Standard Model phenomenology, additional assumptions in the form of discrete symmetries and/or new interactions are needed. We introduce and investigate Discrete Symmetry method and Higher Dimensional Operators as mechanisms for solving the neutrino mass and mixing problems in these models.

27 pages, 2 figures; typos correted, version to be published in Physical Review D

References in corpus (17)

• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• Evidence for Neutrino Oscillations from the Observation of Electron Anti-neutrinos in a Muon Anti-Neutrino Beam
• A combined analysis of short-baseline neutrino experiments in the (3+1) and (3+2) sterile neutrino oscillation hypotheses
• Sterile neutrinos in neutrinoless double beta decay
• LSND anomaly from CPT violation in four-neutrino models
• Neutrino Masses in Supersymmetric SU(3)_C x SU(2)_L x U(1)_Y x U(1)' Models
• Simple Model for (3+2) Neutrino Oscillations
• Chiral Gauge Models for Light Sterile Neutrinos
• The hidden sterile neutrino and the (2+2) sum rule
• The 2+2 and 3+1 Four-Family Neutrino Mixing at the Neutrino Factory
• Neutrino Masses in the Effective Rank-5 Subgroups of E_6 I: Non-supersymmetric Case
• L_e + L_μ- L_τ- L_s Symmetry and a Mixed 2+2 Scenario for Neutrino Oscillations
• Avoiding BBN Constraints on Mirror Models for Sterile Neutrinos
• (3+2) Neutrino Scheme From A Singular Double See-Saw Mechanism
• Extra neutral gauge bosons and Higgs bosons in an E_6-based model
• t-channel production of heavy charged leptons
• Physical Reach of a Neutrino Factory in the 2+2 and 3+1 Four-Family Scenario

Cited by in corpus (15)

• Physics at a future Neutrino Factory and super-beam facility
• Seesaw Right Handed Neutrino as the Sterile Neutrino for LSND
• Constraining Mass Spectra with Sterile Neutrinos from Neutrinoless Double Beta Decay, Tritium Beta Decay and Cosmology
• Gauge boson families in grand unified theories of fermion masses: E_6^4 x S_4
• Searching for signatures of $E_6$
• Neutrino Masses in the Effective Rank-5 Subgroups of E_6 I: Non-supersymmetric Case
• Three sterile neutrinos in E6
• Minimal Flipped SO(10) x U(1) Supersymmetric Higgs Model
• Natural dark matter and light bosons with an alternative left-right symmetry
• Mirror World with Broken Mirror Parity, E(6) Unification and Cosmology
• Neutralino Dark Matter in the Left-Right Supersymmetric Model
• Doubly Charged Higgsinos at Tevatron
• Seesaw scales and the steps from the Standard Model towards superstring-inspired flipped E_6
• Leptonic probes of Alternative Left-Right Symmetric Models
• Invisible Z decay width bounds on active-sterile neutrino mixing in the (3+1) and (3+2) models