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 › peer-review

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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title = "Triviality, perturbation theory and Z → bb",

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.",

author = "Kenichiro Aoki and Santiago Peris",

note = "Funding Information: K.A. would like to thank the hospitality of UCLA where a part of this work was conducted. The work of K.A. was supported in part by the Grant in Aid for Scientitic Research from the Ministry of Education, Science and Culture. Funding Information: S.P. would like to thank Sergio Fanchiotti, Tim Morris and Arcadi Santamaria for interesting con-vcrsations; and Maurizio Consoli, Rolf Tarrach and Gabriele Veneziano for a critical reading of the manuscript. He would also like to thank R. Barbieri for a comment explaining the results of Ref. \[4 I. The work of S.P. was partially supported by the research project CICYT-AEN93-0474.",

year = "1994",

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doi = "10.1016/0370-2693(94)90379-4",

language = "English",

volume = "335",

pages = "470--478",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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T1 - Triviality, perturbation theory and Z → bb

AU - Aoki, Kenichiro

AU - Peris, Santiago

N1 - Funding Information: K.A. would like to thank the hospitality of UCLA where a part of this work was conducted. The work of K.A. was supported in part by the Grant in Aid for Scientitic Research from the Ministry of Education, Science and Culture. Funding Information: S.P. would like to thank Sergio Fanchiotti, Tim Morris and Arcadi Santamaria for interesting con-vcrsations; and Maurizio Consoli, Rolf Tarrach and Gabriele Veneziano for a critical reading of the manuscript. He would also like to thank R. Barbieri for a comment explaining the results of Ref. \[4 I. The work of S.P. was partially supported by the research project CICYT-AEN93-0474.

PY - 1994/9/8

Y1 - 1994/9/8

N2 - 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.

AB - 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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U2 - 10.1016/0370-2693(94)90379-4

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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