All Fermion Masses and Mixings in an Intersecting D-brane World

Abstract

It is shown that neutrino mixing angles which are consistent with current experimental observations may be naturally obtained in a Pati-Salam model constructed from intersecting D6 branes on a $T^6/(Z_2\times Z_2)$ orientifold. The Dirac mass matrices in the model are naturally the same as those which are obtained by imposing a $\mathbf{\Delta }(27)$ flavor symmetry, which allows for near-tribimaximal mixing in the neutrino sector. In addition, it is possible to obtain the correct mass matrices for quarks and charged leptons, as well as nearly the correct CKM matrix. An RGE analysis of the neutrino mass parameters, including the seesaw mechanism assuming a specific form for the right-handed neutrino mass matrix is performed, and it is found that the neutrino mixing angles at the electroweak scale are ${\theta }_{12}=35.0^{\circ }$, ${\theta }_{23}=47.1^{\circ }$, and ${\theta }_{13}=8.27^{\circ }$. In addition,the neutrino mass-squared differences are found to be $\Delta m_{32}^2=0.00252$ eV${}^2$ and $\Delta m_{21}^2=0.0000739$ eV${}^2$ with $m_1=0.0146$ eV, $m_2=0.0170$ eV, and $m_3=0.0530$ eV.

24 pages, 8 figures. v2 Improved discussion, typos fixed, references and RGE analysis of neutrino mass parameters added. arXiv admin note: substantial text overlap with arXiv:1012.3465

References in corpus (15)

• Observation of electron-antineutrino disappearance at Daya Bay
• Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
• Global analysis of three-flavour neutrino oscillations: synergies and tensions in the determination of theta_23, delta_CP, and the mass ordering
• Updated fit to three neutrino mixing: exploring the accelerator-reactor complementarity
• Progress in D-brane model building
• Non-Abelian Discrete Flavor Symmetries from Magnetized/Intersecting Brane Models
• Unification and Fermion Mass Structure
• Near Tribimaximal Neutrino Mixing with Delta(27) Symmetry
• Scale-dependent galaxy bias, CMB lensing-galaxy cross-correlation, and neutrino masses
• A Realistic World from Intersecting D6-Branes
• Realistic Yukawa Textures and SUSY Spectra from Intersecting Branes
• Towards a theory of quark masses, mixings and CP-violation
• Type IIA Pati-Salam Flux Vacua
• Flipped and Unflipped SU(5) as Type IIA Flux Vacua
• Yukawa Corrections from Four-Point Functions in Intersecting D6-Brane Models

Cited by in corpus (4)

• The Supersymmetry Breaking Soft Terms, and Fermion Masses and Mixings in the Supersymmetric Pati-Salam Model from Intersecting D6-branes
• Fermion masses and mixings in the supersymmetric Pati-Salam landscape from Intersecting D6-Branes
• Fermion Masses and Mixings in String Theory with Dirac Neutrinos
• One String to Rule Them All: Neutrino Masses and Mixing Angles