Large Mass Scale by Strong Gauge Dynamics with Infrared Fixed Point
Abstract
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.
Keywords
Cite
@article{arxiv.hep-ph/0411288,
title = {Large Mass Scale by Strong Gauge Dynamics with Infrared Fixed Point},
author = {Tatsuo Kobayashi and Hiroaki Nakano and Haruhiko Terao and Yoshihisa Yamada},
journal= {arXiv preprint arXiv:hep-ph/0411288},
year = {2009}
}
Comments
18 pages, 4 figures, 1 table, LaTeX (PTPTeX style)