Exotic see-saw mechanism for neutrinos and leptogenesis in a Pati-Salam model

Abstract

We discuss non-perturbative corrections to the neutrino sector, in the context of a D-brane Pati-Salam-like model, that can be obtained as a simple alternative to $SO(10)$ GUT's in theories with open and unoriented strings. In such D-brane models, exotic stringy instantons can correct the right-handed neutrino mass matrix in a calculable way, thus affecting mass hierarchies and modifying the see-saw mechanism to what we name exotic see-saw. For a wide range of parameters, a compact spectrum of right-handed neutrino masses can occur that gives rise to a predictive scenario for low energy observables. This model also provides a viable mechanism for Baryon Asymmetry in the Universe (BAU) through leptogenesis. Finally, a Majorana mass for the neutron is naturally predicted in the model, leading to potentially testable neutron-antineutron oscillations. Combined measurements in neutrino and neutron-antineutron sectors could provide precious informations on physics at the quantum gravity scale.

35 pages, 2 figures, matches the journal version

References in corpus (46)

• Big-Bang Nucleosynthesis
• Leptogenesis
• Updated fit to three neutrino mixing: status of leptonic CP violation
• Spacetime Instanton Corrections in 4D String Vacua - The Seesaw Mechanism for D-Brane Models
• Updated Values of Running Quark and Lepton Masses
• Neutrino Majorana Masses from String Theory Instanton Effects
• Stringy origin of non-Abelian discrete flavor symmetries
• Orientifolds, hypercharge embeddings and the Standard Model
• Anomalies, Anomalous U(1)'s and generalized Chern-Simons terms
• Instanton Induced Neutrino Majorana Masses in CFT Orientifolds with MSSM-like spectra
• Non-Abelian Discrete Flavor Symmetries from Magnetized/Intersecting Brane Models
• Flavoured leptogenesis: a successful thermal leptogenesis with N_1 mass below 10^8 GeV
• Non-perturbative Yukawa Couplings from String Instantons
• Dark Matter and Gauge Coupling Unification in Non-supersymmetric SO(10) Grand Unified Models
• The importance of N2 leptogenesis
• Lorentz-violating graviton masses: getting around ghosts, low strong coupling scale and VDVZ discontinuity
• Neutrino Mass Hierarchy
• Post--Sphaleron Baryogenesis
• Non-perturbative and Flux superpotentials for Type I strings on the Z_3 orbifold
• Towards Realistic String Vacua From Branes At Singularities
• Minimal Anomalous U(1)' Extension of the MSSM
• Successful type I Leptogenesis with SO(10)-inspired mass relations
• Neutrino Mass Hierarchy and neutron-anti-neutron Oscillation from Baryogenesis
• String predictions for near future colliders from one-loop scattering amplitudes around D-brane worlds
• Diquark Higgs at LHC
• Unified TeV Scale Picture of Baryogenesis and Dark Matter
• Neutrino Masses and Mixings from String Theory Instantons
• Decrypting $SO(10)$-inspired leptogenesis
• Leptogenesis in SO(10)
• Neutron Majorana mass from exotic instantons
• The Stueckelberg Extension and Milli Weak and Milli Charge Dark Matter
• Successful Leptogenesis in SO(10) Unification with a Left-Right Symmetric Seesaw Mechanism
• 'Exotic vector-like pair' of color-triplet scalars
• Local String Models and Moduli Stabilisation
• Discriminating MSSM families in (free-field) Gepner Orientifolds
• External stability for Spherically Symmetric Solutions in Lorentz Breaking Massive Gravity
• Chiral Gepner Model Orientifolds
• Mass-deformed Brane Tilings
• Nonlocal quantum field theory without acausality and nonunitarity at quantum level: is SUSY the key?
• A split SUSY model from SUSY GUT
• Examining leptogenesis with lepton flavor violation and the dark matter abundance
• Flavor violating $Z^{\prime }$ from $SO(10)$ SUSY GUT in High-Scale SUSY
• Neutron Majorana mass from Exotic Instantons in a Pati-Salam model
• Discrete symmetries from hidden sectors
• Flavour, Electroweak Symmetry Breaking and Dark Matter: state of the art and future prospects
• Strong thermal Leptogenesis: an exploded view of the low energy neutrino parameters in the SO(10)-inspired model

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• String completion of an $\mathrm{SU}(3{)}_{\mathrm{c}}\otimes \mathrm{SU}(3{)}_{\mathrm{L}}\otimes \mathrm{U}(1{)}_{\mathrm{X}}$ electroweak model
• Leptogenesis, radiative neutrino masses and inert Higgs triplet dark matter
• Peccei-Quinn symmetry for Dirac seesaw and leptogenesis
• Fermion Masses and Mixings, Leptogenesis and Baryon Number Violation in Pati-Salam Model
• Dark Matter and Inflation in $R+\zeta R^2$ Supergravity
• Supersymmetric $SO(10)$-inspired leptogenesis and a new $N_2$-dominated scenario
• Way-out to the Gravitino problem in intersecting D-brane Pati-Salam models
• (Anti)evaporation of Dyonic Black Holes in string-inspired dilaton $f(R)$-gravity
• Strong thermal $SO(10)$-inspired leptogenesis in the light of recent results from long-baseline neutrino experiments
• Dark Matter from Starobinsky Supergravity
• Neutron-antineutron oscillations beyond the quasi-free limit
• Revisiting light stringy states in view of the 750 GeV diphoton excess
• String (gravi)photons, "dark brane photons", holography and the hypercharge portal
• $\mathcal{N}=1$ 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