Majorana neutrino mass structure induced by rigid instatons on toroidal orbifold

Abstract

We study effects of D-brane instantons wrapping rigid cycles on Z2*Z2' toroidal orbifold. We compute Majorana masses induced by rigid D-brane instantons and realize bimaximal mixing matrices in certain models. We can also derive more generic mass matrices in other models. The bimaximal mixing Majorana mass matrix has a possibility to explain observed mixing angles. We also compute the mu-term matrix among more than one pairs of Higgs fields induced by rigid D-brane instantons.

19 pages, 3 figures

References in corpus (14)

• Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
• Global status of neutrino oscillation parameters after Neutrino-2012
• Spacetime Instanton Corrections in 4D String Vacua - The Seesaw Mechanism for D-Brane Models
• Neutrino Majorana Masses from String Theory Instanton Effects
• Stringy origin of non-Abelian discrete flavor symmetries
• Instanton Induced Neutrino Majorana Masses in CFT Orientifolds with MSSM-like spectra
• Non-Abelian Discrete Flavor Symmetries from Magnetized/Intersecting Brane Models
• Computation of D-brane instanton induced superpotential couplings - Majorana masses from string theory
• Three generation magnetized orbifold models
• Higher Order Couplings in Magnetized Brane Models
• Classification of three-generation models on magnetized orbifolds
• Neutrino Masses and Mixings from String Theory Instantons
• Higher Order Couplings from Heterotic Orbifold Theory
• D-brane instanton induced mu-terms and their hierarchical structure

Cited by in corpus (12)

• Zero-modes on orbifolds : magnetized orbifold models by modular transformation
• Comprehensive Analysis of Yukawa Hierarchies on $T^2/Z_N$ with Magnetic Fluxes
• CP-violating phase on magnetized toroidal orbifolds
• Modular symmetry in magnetized/intersecting D-brane models
• Classification of three generation models by orbifolding magnetized $T^2\times T^2$
• Quark and lepton flavor structure in magnetized orbifold models at residual modular symmetric points
• Flavor structure in $SO(32)$ heterotic string theory
• Kähler moduli stabilization in semi-realistic magnetized orbifold models
• Supersymmetric models on magnetized orbifolds with flux-induced Fayet-Iliopoulos terms
• Modular symmetry anomaly and non-perturbative neutrino mass terms in magnetized orbifold models
• Effects of localized μ-terms at the fixed points in magnetized orbifold models
• Quark mass matrices in magnetized orbifold models with localized Fayet-Iliopoulos terms