Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-04-11
Phys.Rev.D74:015002,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, 9 Postscript figures, uses revtex4.sty, Some comments and a reference added, to appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.74.015002
It is shown that fine-tuning of the Higgs parameters stronger than a few % is required at the best in the models with gauge mediated supersymmetry breaking. With the aim of solving this problem, we consider a new type of models in which the top Yukawa coupling is induced at TeV scale through mass mixing with unknown matter fields. Then it is found that the fine-tuning problem can be eliminated essentially. We discuss some phenomenological features of this model and also consider the extension to the next-to-minimal models.
Kobayashi Tatsuo
Terao Haruhiko
Tsuchiya Akito
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