Triviality, perturbation theory and Z → bb

Kenichiro Aoki; Santiago Peris

doi:10.1016/0370-2693(94)90379-4

Triviality, perturbation theory and Z → bb

Kenichiro Aoki, Santiago Peris

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

We compute the large-m_t contributions to the Zbb vertex in the Standard Model non-perturbatively using both the 1/N_c and the 1/N_F expansions. Triviality and its consequences for the perturbative result are systematically analyzed. In particular, we point out that the effect of triviality is already important at the two-loop level for a heavy Higgs (600 GeV < M_H < 1 TeV) even when the top mass is below 200 GeV.

Original language	English
Pages (from-to)	470-478
Number of pages	9
Journal	Physics Letters B
Volume	335
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(94)90379-4
Publication status	Published - 1994 Sep 8
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Aoki, K., & Peris, S. (1994). Triviality, perturbation theory and Z → bb. Physics Letters B, 335(3-4), 470-478. https://doi.org/10.1016/0370-2693(94)90379-4

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abstract = "We compute the large-mt contributions to the Zbb vertex in the Standard Model non-perturbatively using both the 1/Nc and the 1/NF expansions. Triviality and its consequences for the perturbative result are systematically analyzed. In particular, we point out that the effect of triviality is already important at the two-loop level for a heavy Higgs (600 GeV < MH < 1 TeV) even when the top mass is below 200 GeV.",

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