Stringy Instantons and Yukawa Couplings in MSSM-like Orientifold Models
arXiv:0811.1583 · doi:10.1088/1126-6708/2009/03/090
Abstract
Type IIA orientifold constructions with intersecting D6-branes and their IIB duals in terms of magnetized D9/D7-branes constitute one of the most promising avenues for the construction of semirealistic MSSM-like compactifications. One generic problem with these constructions is, that there are many Yukawa couplings, which vanish due to additional U(1) symmetries in the theory. In this paper we consider a number of such settings and study, under what conditions stringy instanton effects can give rise to non-perturbative contributions to the Yukawa couplings, so that all perturbatively forbidden terms are induced. We find specific settings, in which indeed Yukawa couplings for all fermions are obtained. For some cases we provide specific local examples of rigid O(1) Instantons within the T^6/ Z2 x Z2' toroidal orientifold with torsion, giving rise to the required amplitudes. A potential problem in these settings is, that the same instantons, providing for Yukawa coupling contributions, may give rise to too large mu-terms for the Higgs multiplets. We show how this problem may be overcome in explicit models with a doubled Higgs system.
33 pages, 8 figures, v2: corrected typos, added references
References in corpus (66)
- Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
- Non-Perturbative Superpotentials In String Theory
- Toward Realistic Intersecting D-Brane Models
- Chiral Four-Dimensional N=1 Supersymmetric Type IIA Orientifolds from Intersecting D6-Branes
- Three-Family Supersymmetric Standard-like Models from Intersecting Brane Worlds
- Spacetime Instanton Corrections in 4D String Vacua - The Seesaw Mechanism for D-Brane Models
- Intersecting Brane Worlds
- D=4 Chiral String Compactifications from Intersecting Branes
- Noncommutative Compactifications of Type I Strings on Tori with Magnetic Background Flux
- Neutrino Majorana Masses from String Theory Instanton Effects
- Yukawa couplings in intersecting D-brane models
- Scattering of Gauge, Matter, and Moduli Fields from Intersecting Branes
- The Standard Model from Stable Intersecting Brane World Orbifolds
- Supersymmetric Standard Model Spectra from RCFT orientifolds
- Stringy Instantons and Quiver Gauge Theories
- Conformal Field Theory Couplings for Intersecting D-branes on Orientifolds
- Gaugino Condensates and D-terms from D7-branes
- Moduli Stabilisation versus Chirality for MSSM like Type IIB Orientifolds
- Building MSSM Flux Vacua
- Classical gauge instantons from open strings
- Progress in D-brane model building
- Orientifolds, hypercharge embeddings and the Standard Model
- Instanton Induced Neutrino Majorana Masses in CFT Orientifolds with MSSM-like spectra
- Intersecting Brane Models of Particle Physics and the Higgs Mechanism
- Non-perturbative Yukawa Couplings from String Instantons
- Stringy Instantons at Orbifold Singularities
- Computation of D-brane instanton induced superpotential couplings - Majorana masses from string theory
- A Note On Zeroes Of Superpotentials In F-Theory
- D-brane Instantons on the T^6/Z_3 orientifold
- Interactions in Intersecting Brane Models
- Chiral D-brane Models with Frozen Open String Moduli
- Metastable vacua and D-branes at the conifold
- Non-perturbative and Flux superpotentials for Type I strings on the Z_3 orbifold
- A Three-Family Standard-like Orientifold Model: Yukawa Couplings and Hierarchy
- Geometric Transitions and Dynamical SUSY Breaking
- Realistic Yukawa Couplings through Instantons in Intersecting Brane Worlds
- Non-perturbative SQCD Superpotentials from String Instantons
- Instanton Induced Open String Superpotentials and Branes at Singularities
- Instantons and Holomorphic Couplings in Intersecting D-brane Models
- Simple Stringy Dynamical SUSY Breaking
- Stringy Instantons and Cascading Quivers
- Lifting D-Instanton Zero Modes by Recombination and Background Fluxes
- A Realistic World from Intersecting D6-Branes
- Instanton effects in N=1 brane models and the Kahler metric of twisted matter
- Power Towers of String Instantons for N=1 Vacua
- Instantons in N=2 magnetized D-brane worlds
- Flux interactions on D-branes and instantons
- Realistic Yukawa Textures and SUSY Spectra from Intersecting Branes
- Hierarchies from D-brane instantons in globally defined Calabi-Yau Orientifolds
- Neutrino Masses and Mixings from String Theory Instantons
- Non-perturbative F-terms across lines of BPS stability
- String instantons, fluxes and moduli stabilization
- Superpotentials From Stringy Instantons Without Orientifolds
- D-Instanton Generated Dirac Neutrino Masses
- Non-perturbative superpotentials across lines of marginal stability
- SUSY breaking mediation by D-brane instantons
- D-brane instantons and the effective field theory of flux compactifications
- Non-perturbative effective interactions from fluxes
- Multi-instanton and string loop corrections in toroidal orbifold models
- (Non-)BPS bound states and D-brane instantons
- Instantons and Toric Quiver Gauge Theories
- Yukawa Corrections from Four-Point Functions in Intersecting D6-Brane Models
- String GUT Scenarios with Stabilised Moduli
- Unoriented D-brane Instantons vs Heterotic worldsheet Instantons
- D-brane Instantons in 4D Supersymmetric String Vacua
- D-instanton derivation of multi-fermion F-terms in supersymmetric QCD
Cited by in corpus (30)
- Discrete gauge symmetries in D-brane models
- Discrete Gauge Symmetries in Discrete MSSM-like Orientifolds
- Realistic Yukawa Structures from Orientifold Compactifications
- Implications of String Constraints for Exotic Matter and Z' s Beyond the Standard Model
- Higgs Mass Prediction for Realistic String/M Theory Vacua
- String Constraints on Discrete Symmetries in MSSM Type II Quivers
- The Weinberg Operator and a Lower String Scale in Orientifold Compactifications
- On mass hierarchies in orientifold vacua
- Rigid D6-branes on T6/[Z(2)xZ(2M)xOmegaR] with discrete torsion
- Stringy instanton corrections to N=2 gauge couplings
- Towards the Standard Model in F-theory
- On the computation of non-perturbative effective potentials in the string theory landscape -- IIB/F-theory perspective
- Dynamical Supersymmetry Breaking, with Flavor
- Neutrino Masses from the Top Down
- SU(5) D-brane realizations, Yukawa couplings and proton stability
- Singlet Extensions of the MSSM in the Quiver Landscape
- Stringy Hidden Valleys
- Theory and Phenomenology of mu in M theory
- Ultraviolet Completions of Axigluon Models and Their Phenomenological Consequences
- Fermion masses and mixings in the supersymmetric Pati-Salam landscape from Intersecting D6-Branes
- More about Neutron Majorana mass from Exotic Instantons: an alternative mechanism in Low-Scale String theory
- D-brane Inspired Fermion Mass Textures
- Dynamical Supersymmetry Breaking in Intersecting Brane Models
- Phenomenological analysis of D-brane Pati-Salam vacua
- Gauge-Stringy Instantons in N=2 U(N) Gauge Theories
- Fermion Masses and Mixings in String Theory with Dirac Neutrinos
- Mass Hierarchies from MSSM Orientifold Compactifications
- Three family supersymmetric Pati-Salam model from rigid intersecting D6-branes
- Instanton induced Yukawa couplings from distant E3 and E(-1) instantons
- Three-family supersymmetric Pati-Salam models from intersecting D6-branes on rigid cycles