Nonlinear evolution of Yukawa couplings in the double Higgs and supersymmetric 
extensions of the standard model

Grzadkowski, B.; Lindner, M.; Theisen, Stefan

doi:10.1016/0370-2693(87)90160-2

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Nonlinear evolution of Yukawa couplings in the double Higgs and supersymmetric extensions of the standard model

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Theisen, Stefan
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Citation

Grzadkowski, B., Lindner, M., & Theisen, S. (1987). Nonlinear evolution of Yukawa couplings in the double Higgs and supersymmetric extensions of the standard model. Physics Letters B, 198(1), 64-68. doi:10.1016/0370-2693(87)90160-2.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-5D86-5

Abstract

The nonlinear evolution equations for Yukawa coupling matrices are discussed in the context of the standard, double Higgs and supersymmetric model of electroweak interactions. In each case, even in the presence of a very heavy top quark the approximate analytical solutions for the nonlinear evolution of masses and mixing angles are found. Comparison of the analytical approach with numerical solutions confirm the excellent validity of the approximation. Some possible further applications of the developed method are suggested.