Evolution of the Yukawa coupling constants and seesaw operators in the universal seesaw model

Details Evolution of the Yukawa coupling constants and seesaw operators in the universal seesaw model Evolution of the Yukawa coupling constants and seesaw operators in the universal seesaw model

2000-11-06

arxiv.org/abs/hep-ph/0011070v2

Phys.Rev. D64 (2001) 053014

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, RevTex, 10 figures

Scientific paper

10.1103/PhysRevD.64.053014

The general features of the evolution of the Yukawa coupling constants and seesaw operators in the universal seesaw model with det M_F=0 are investigated. Especially, it is checked whether the model causes bursts of Yukawa coupling constants, because in the model not only the magnitude of the Yukawa coupling constant (Y_L^u)_{33} in the up-quark sector but also that of (Y_L^d)_{33} in the down-quark sector is of the order of one, i.e., (Y_L^u)_{33} \sim (Y_L^d)_{33} \sim 1. The requirement that the model should be calculable perturbatively puts some constraints on the values of the intermediate mass scales and tan\beta (in the SUSY model).

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