Top Quark Mass Enhancement in a Seesaw-Type Quark Mass Matrix
Koide, Y. · Fusaoka, H.
Original · EN
We investigate the implications of a seesaw type mass matrix, i.e., Mf≃ mₗ MF⁻¹ mᵣ, for quarks and leptons f under the assumption that the matrices mₗ and mᵣ are common to all flavors (up-/down- and quark-/lepton- sectors) and the matrices MF characterizing the heavy fermion sectors have the form [(unit matrix) + bf (a democratic matrix)] where bf is a flavor parameter. We find that by adjusting the complex parameter bf, the model can provide that mₜ≫ mb while at the same time keeping mᵤ md without assuming any parameter with hierarchically different values between Mᵤ and MD. The model with three adjustable parameters under the ``maximal" top quark mass enhancement can give reasonable values of five quark mass ratios and four KM matrix parameters.
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