Renormalization effects on neutrino masses and mixing in a string-inspired SU(4)xSU(2){sub L}xSU(2){sub R}xU(1){sub X} model
- University of Heidelberg, Philosophenweg 16, D-69120 (Germany)
- Theoretical Physics Division, Ioannina University, GR-45110 Ioannina (Greece)
We discuss renormalization effects on neutrino masses and mixing angles in a supersymmetric string-inspired SU(4)xSU(2){sub L}xSU(2){sub R}xU(1){sub X} model, with matter in fundamental and antisymmetric tensor representations and singlet Higgs fields charged under the anomalous U(1){sub X} family symmetry. The quark, lepton and neutrino Yukawa matrices are distinguished by different Clebsch-Gordan coefficients. The presence of a second U(1){sub X} breaking singlet with fractional charge allows a more realistic, hierarchical light neutrino mass spectrum with bi-large mixing. By numerical investigation we find a region in the model parameter space where the neutrino mass-squared differences and mixing angles at low energy are consistent with experimental data.
- OSTI ID:
- 21020206
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 75, Issue 6; Other Information: DOI: 10.1103/PhysRevD.75.065027; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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