Un-oriented Quiver Theories for Majorana Neutrons

Abstract

In the context of un-oriented open string theories, we identify quivers whereby a Majorana mass for the neutron is indirectly generated by exotic instantons. We discuss two classes of (Susy) Standard Model like quivers, depending on the embedding of SU(2)_W in the Chan-Paton group. In both cases, the main mechanism involves a vector-like pair mixing through a non-perturbative mass term. We also discuss possible relations between the phenomenology of Neutron-Antineutron oscillations and LHC physics in these models. In particular, a vector-like pair of color-triplet scalars or color-triplet fermions could be directly detected at LHC, compatibly with n-\bar{n} limits. Finally we briefly comment on Pati-Salam extensions of our models.

More comments on phenomenology and fluxes, Re-discussion of SM-quivers compatible with n-cycles conditions Version accepted by JHEP

References in corpus (20)

• Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
• Spacetime Instanton Corrections in 4D String Vacua - The Seesaw Mechanism for D-Brane Models
• Neutrino Majorana Masses from String Theory Instanton Effects
• Anomalies, Anomalous U(1)'s and generalized Chern-Simons terms
• Instanton Induced Neutrino Majorana Masses in CFT Orientifolds with MSSM-like spectra
• Post--Sphaleron Baryogenesis
• Non-perturbative and Flux superpotentials for Type I strings on the Z_3 orbifold
• Dimers and Orientifolds
• Instanton effects in N=1 brane models and the Kahler metric of twisted matter
• Flux interactions on D-branes and instantons
• Unified TeV Scale Picture of Baryogenesis and Dark Matter
• Towards the One-loop Kahler Metric of Calabi-Yau Orientifolds
• Neutron Majorana mass from exotic instantons
• The Stueckelberg Extension and Milli Weak and Milli Charge Dark Matter
• Dynamical supersymmetry breaking from unoriented D-brane instantons
• 'Exotic vector-like pair' of color-triplet scalars
• External stability for Spherically Symmetric Solutions in Lorentz Breaking Massive Gravity
• Nonlocal quantum field theory without acausality and nonunitarity at quantum level: is SUSY the key?
• Quantum Corrections in String Compactifications on SU(3) Structure Geometries
• Supersymmetry of Noncompact MQCD-like Membrane Instantons and Heat Kernel Asymptotics

Cited by in corpus (18)

• Perturbative Renormalization of Neutron-Antineutron Operators
• String completion of an $\mathrm{SU}(3{)}_{\mathrm{c}}\otimes \mathrm{SU}(3{)}_{\mathrm{L}}\otimes \mathrm{U}(1{)}_{\mathrm{X}}$ electroweak model
• Exotic see-saw mechanism for neutrinos and leptogenesis in a Pati-Salam model
• The fate of Schwarzschild-de Sitter Black Holes in $f(R)$ gravity
• Dark Matter and Inflation in $R+\zeta R^2$ Supergravity
• Way-out to the Gravitino problem in intersecting D-brane Pati-Salam models
• Unitarization and Causalization of Non-local quantum field theories by Classicalization
• Dark Matter from Starobinsky Supergravity
• D-brane Instantons as Gauge Instantons in Orientifolds of Chiral Quiver Theories
• Partonic behavior of string scattering amplitudes from holographic QCD models
• More about Neutron Majorana mass from Exotic Instantons: an alternative mechanism in Low-Scale String theory
• Backreacting D-brane instantons on branes at singularities
• $\mathcal{N}=1$ conformal dualities from unoriented chiral quivers
• More about the Instanton/Soliton/Kink correspondence
• Super-light baryphotons, Weak Gravity Conjecture and Exotic instantons in Neutron-Antineutron transitions
• Testing B-violating signatures from Exotic Instantons in future colliders
• Weak Gravity Conjecture as a Razor Criterium for Exotic D-brane instantons
• A Scotogenic Model as a Prototype for Leptogenesis with One Single Gauge Singlet