Supersymmetry breaking as the origin of flavor
- Department of Physics and Astronomy, University of Hawaii at Manoa, 2505 Correa Road, Honolulu, Hawaii 96822 (United States)
We present an effective flavor model for the radiative generation of fermion masses and mixings based on a SU(5){sub V}xU(2){sub H} symmetry. We assume that the original source of flavor breaking resides in the supersymmetry-breaking sector. Flavor violation is transmitted radiatively to the fermion Yukawa couplings at low energy through finite supersymmetric threshold corrections. This model can fit the fermion mass ratios and Cabibbo-Kobayashi-Maskawa matrix elements, explain the nonobservation of proton decay, and overcome the present constraints on flavor changing processes through an approximate radiative alignment between the Yukawa and the soft trilinear sector. The model predicts relations between dimensionless fermion mass ratios in the three fermion sectors, and the quark mixing angles, vertical bar V{sub us} vertical bar{approx_equal}[m{sub d}/m{sub s}]{sup 1/2}{approx_equal}[m{sub u}/m{sub c}]{sup 1/4}{approx_equal}3[m{sub e}/m{sub {mu}}]{sup 1/2} and (1/2)vertical bar V{sub cb}/V{sub us} vertical bar{approx_equal}[m{sub s}{sup 3}/m{sub b}{sup 2}m{sub d}]{sup 1/2}{approx_equal}[m{sub c}{sup 3}/m{sub t}{sup 2}m{sub u}]{sup 1/2}{approx_equal}(1/9)[m{sub {mu}}{sup 3}/m{sub {tau}}{sup 2}m{sub e}]{sup 1/2}, which are confirmed by the experimental measurements.
- OSTI ID:
- 20705157
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 70, Issue 5; Other Information: DOI: 10.1103/PhysRevD.70.055003; (c) 2004 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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