Instanton induced charged fermion and neutrino masses in a minimal Standard Model scenario from intersecting D-branes
arXiv:0903.3691 · doi:10.1142/S0217751X09047351
Abstract
String instanton Yukawa corrections from Euclidean D-branes are investigated in an effective Standard Model theory obtained from the minimal U(3)xU(2)xU(1) D-brane configuration. In the case of the minimal chiral and Higgs spectrum, it is found that superpotential contributions are induced by string instantons for the perturbatively forbidden entries of the up and down quark mass matrices. Analogous non-perturbative effects generate heavy Majorana neutrino masses and a Dirac neutrino texture with factorizable Yukawa couplings. For this latter case, a specific example is worked out where it is shown how this texture can reconcile the neutrino data.
17 pages, 3 figures
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- Dynamical Supersymmetry Breaking in Intersecting Brane Models
- Phenomenological analysis of D-brane Pati-Salam vacua
- Testing extra dimensions with boundaries using Newton's law modifications
- Mass Hierarchies from MSSM Orientifold Compactifications