Large Mass Scale by Strong Gauge Dynamics with Infrared Fixed Point

Details Large Mass Scale by Strong Gauge Dynamics with Infrared Fixed Point Large Mass Scale by Strong Gauge Dynamics with Infrared Fixed Point

2004-11-22

arxiv.org/abs/hep-ph/0411288v1

Prog.Theor.Phys. 113 (2005) 413-427

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 4 figures, 1 table, LaTeX (PTPTeX style)

Scientific paper

10.1143/PTP.113.413

We consider a mechanism for realizing the desired decoupling of strongly-coupled sector which is supposed to generate hierarchical structure of the Yukawa couplings. In our mechanism, the same strongly-coupled sector is responsible for generating a sufficiently flat potential and a large vacuum expectation value (VEV) of a gauge-singlet scalar field by suppressing its soft scalar mass and self-coupling. Vacuum instability is caused by supersymmetry-breaking A-term of order 10 TeV. We explicitly demonstrate the infrared convergence of soft scalar masses due to strongly-coupled dynamics and show the soft mass of the singlet is at most comparable to soft masses of squarks and sleptons, which are much suppressed than the A-term. The physical mass scale of the decoupling is calculated in a self-consistent way. We also reinterpret the result in terms of a RG-improved effective potential.

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