Production of scalar Higgs and pseudoscalar Higgs in multi-Higgs doublet models at γγ colliders

Eri Asakawa; Jun Ichi Kamoshita; Akio Sugamoto; Isamu Watanabe

doi:10.1007/s100520000347

Production of scalar Higgs and pseudoscalar Higgs in multi-Higgs doublet models at γγ colliders

Eri Asakawa, Jun Ichi Kamoshita, Akio Sugamoto, Isamu Watanabe

Physics

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

38 Citations (Scopus)

Abstract

We present the effects of heavy CP-even (H) and CP-odd (A) Higgs bosons on the production cross section of the process γγ → tt̄ at the energy around the mass poles of the Higgs bosons. It is found that interference between H and A with small mass gap, as well as the ones between Higgs bosons and continuum, contributes to the cross section, if the photon beams are polarized and if we observe the helicity of the top quarks. It is demonstrated in the framework of the minimal supersymmetric extension of the standard model that the H and A contributions can be sizable at future γγ colliders for small values of tan β. The methods to measure the CP-parity of the Higgs boson are also presented. The statistical significance of detecting the Higgs signals and measuring the Higgs CP-parity is evaluated.

Original language	English
Pages (from-to)	335-345
Number of pages	11
Journal	European Physical Journal C
Volume	14
Issue number	2
DOIs	https://doi.org/10.1007/s100520000347
Publication status	Published - 2000

All Science Journal Classification (ASJC) codes

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

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10.1007/s100520000347

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title = "Production of scalar Higgs and pseudoscalar Higgs in multi-Higgs doublet models at γγ colliders",

abstract = "We present the effects of heavy CP-even (H) and CP-odd (A) Higgs bosons on the production cross section of the process γγ → t{\=t} at the energy around the mass poles of the Higgs bosons. It is found that interference between H and A with small mass gap, as well as the ones between Higgs bosons and continuum, contributes to the cross section, if the photon beams are polarized and if we observe the helicity of the top quarks. It is demonstrated in the framework of the minimal supersymmetric extension of the standard model that the H and A contributions can be sizable at future γγ colliders for small values of tan β. The methods to measure the CP-parity of the Higgs boson are also presented. The statistical significance of detecting the Higgs signals and measuring the Higgs CP-parity is evaluated.",

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AU - Asakawa, Eri

AU - Kamoshita, Jun Ichi

AU - Sugamoto, Akio

AU - Watanabe, Isamu

PY - 2000

Y1 - 2000

N2 - We present the effects of heavy CP-even (H) and CP-odd (A) Higgs bosons on the production cross section of the process γγ → tt̄ at the energy around the mass poles of the Higgs bosons. It is found that interference between H and A with small mass gap, as well as the ones between Higgs bosons and continuum, contributes to the cross section, if the photon beams are polarized and if we observe the helicity of the top quarks. It is demonstrated in the framework of the minimal supersymmetric extension of the standard model that the H and A contributions can be sizable at future γγ colliders for small values of tan β. The methods to measure the CP-parity of the Higgs boson are also presented. The statistical significance of detecting the Higgs signals and measuring the Higgs CP-parity is evaluated.

AB - We present the effects of heavy CP-even (H) and CP-odd (A) Higgs bosons on the production cross section of the process γγ → tt̄ at the energy around the mass poles of the Higgs bosons. It is found that interference between H and A with small mass gap, as well as the ones between Higgs bosons and continuum, contributes to the cross section, if the photon beams are polarized and if we observe the helicity of the top quarks. It is demonstrated in the framework of the minimal supersymmetric extension of the standard model that the H and A contributions can be sizable at future γγ colliders for small values of tan β. The methods to measure the CP-parity of the Higgs boson are also presented. The statistical significance of detecting the Higgs signals and measuring the Higgs CP-parity is evaluated.

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Production of scalar Higgs and pseudoscalar Higgs in multi-Higgs doublet models at γγ colliders

Abstract

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