Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-12-02
Phys.Rev. D69 (2004) 105008
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, 4 figures
Scientific paper
10.1103/PhysRevD.69.105008
We investigate the possibility of constructing a renormalizable standard model with purely fermionic matter content. The Higgs scalar is replaced by point-like fermionic self-interactions with couplings growing large at the Fermi scale. An analysis of the UV behavior in the point-like approximation reveals a variety of non-Gaussian fixed points for the fermion couplings. If real, such fixed points would imply nonperturbative renormalizability and evade triviality of the Higgs sector. For point-like fermionic self-interactions and weak gauge couplings, one encounters a hierarchy problem similar to the one for a fundamental Higgs scalar.
Gies Holger
Jaeckel Joerg
Wetterich Christof
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