Bounds on Higgs and gauge-boson interactions from LEP2 data

O. J.P. Éboli; M. C. Gonzalez-Garcia; S. M. Lietti; S. F. Novaes

doi:10.1016/S0370-2693(98)00752-7

Bounds on Higgs and gauge-boson interactions from LEP2 data

O. J.P. Éboli
, M. C. Gonzalez-Garcia
, S. M. Lietti
, S. F. Novaes

Institute for Theoretical Physics

Universidade Estadual Paulista Júlio de Mesquita Filho
University of Wisconsin-Madison

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

We derive bounds on Higgs and gauge-boson anomalous interactions using the LEP2 data on the production of three photons and photon pairs in association with hadrons. In the framework of SU(2)_L ⊗ U(1)_Y effective Lagrangians, we examine all dimension-six operators that lead to anomalous Higgs interactions involving γ and Z. The search for Higgs boson decaying to γγ pairs allow us to obtain constrains on these anomalous couplings that are comparable with the ones originating from the analysis of pp̄ collisions at the Tevatron. Our results also show that if the coefficients of all "blind" operators are assumed to have the same magnitude, the indirect constraints on the anomalous couplings obtained from this analysis, for Higgs masses M_H ≲ 140 GeV, are more restrictive than the ones coming from the W⁺W^- production.

Original language	English
Pages (from-to)	340-346
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	434
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(98)00752-7
State	Published - Aug 27 1998

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Cite this

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title = "Bounds on Higgs and gauge-boson interactions from LEP2 data",

abstract = "We derive bounds on Higgs and gauge-boson anomalous interactions using the LEP2 data on the production of three photons and photon pairs in association with hadrons. In the framework of SU(2)L ⊗ U(1)Y effective Lagrangians, we examine all dimension-six operators that lead to anomalous Higgs interactions involving γ and Z. The search for Higgs boson decaying to γγ pairs allow us to obtain constrains on these anomalous couplings that are comparable with the ones originating from the analysis of p{\=p} collisions at the Tevatron. Our results also show that if the coefficients of all {"}blind{"} operators are assumed to have the same magnitude, the indirect constraints on the anomalous couplings obtained from this analysis, for Higgs masses MH ≲ 140 GeV, are more restrictive than the ones coming from the W+W- production.",

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T1 - Bounds on Higgs and gauge-boson interactions from LEP2 data

AU - Éboli, O. J.P.

AU - Gonzalez-Garcia, M. C.

AU - Lietti, S. M.

AU - Novaes, S. F.

PY - 1998/8/27

Y1 - 1998/8/27

N2 - We derive bounds on Higgs and gauge-boson anomalous interactions using the LEP2 data on the production of three photons and photon pairs in association with hadrons. In the framework of SU(2)L ⊗ U(1)Y effective Lagrangians, we examine all dimension-six operators that lead to anomalous Higgs interactions involving γ and Z. The search for Higgs boson decaying to γγ pairs allow us to obtain constrains on these anomalous couplings that are comparable with the ones originating from the analysis of pp̄ collisions at the Tevatron. Our results also show that if the coefficients of all "blind" operators are assumed to have the same magnitude, the indirect constraints on the anomalous couplings obtained from this analysis, for Higgs masses MH ≲ 140 GeV, are more restrictive than the ones coming from the W+W- production.

AB - We derive bounds on Higgs and gauge-boson anomalous interactions using the LEP2 data on the production of three photons and photon pairs in association with hadrons. In the framework of SU(2)L ⊗ U(1)Y effective Lagrangians, we examine all dimension-six operators that lead to anomalous Higgs interactions involving γ and Z. The search for Higgs boson decaying to γγ pairs allow us to obtain constrains on these anomalous couplings that are comparable with the ones originating from the analysis of pp̄ collisions at the Tevatron. Our results also show that if the coefficients of all "blind" operators are assumed to have the same magnitude, the indirect constraints on the anomalous couplings obtained from this analysis, for Higgs masses MH ≲ 140 GeV, are more restrictive than the ones coming from the W+W- production.

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DO - 10.1016/S0370-2693(98)00752-7

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SP - 340

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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

IS - 3-4

ER -

Bounds on Higgs and gauge-boson interactions from LEP2 data

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