Showing papers by "Abdelhak Djouadi published in 1999"
TL;DR: In this paper, the authors present a systematic overview of the cross sections for the production of pairs of (light) neutral Higgs bosons at the LHC for the Standard Model and its minimal supersymmetric extension.
Abstract: The reconstruction of the Higgs potential in the Standard Model or supersymmetric theories demands the measurement of the trilinear Higgs couplings. These couplings affect the multiple production of Higgs bosons at high energy colliders. We present a systematic overview of the cross sections for the production of pairs of (light) neutral Higgs bosons at the LHC. The analysis is carried out for the Standard Model and its minimal supersymmetric extension.
233 citations
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TL;DR: In this article, the MSSM Spectrum, the Physical Parameters, Higgs Boson Production and Decays, SUSY Particle Production and Decay, 6. Experimental Bounds on SSM Masses, 7.
Abstract: CONTENTS: 1. Synopsis, 2. The MSSM Spectrum, 3. The Physical Parameters, 4. Higgs Boson Production and Decays, 5. SUSY Particle Production and Decays, 6. Experimental Bounds on SUSY Particle Masses, 7. References.
173 citations
TL;DR: In this paper, the trilinear and quadrilinear self-couplings of the Higgs field were investigated in the context of double Higgs-strahlung and WW/ZZ fusion.
Abstract: To establish the Higgs mechanism sui generis experimentally, the self-energy potential of the Higgs field must be reconstructed. This task requires the measurement of the trilinear and quadrilinear self-couplings, as predicted, for instance, in the Standard Model or in supersymmetric theories. The couplings can be probed in multiple Higgs production at high-luminosity \(e^+e^-\) linear colliders. Complementing earlier studies to develop a coherent picture of the trilinear couplings, we have analyzed the production of pairs of neutral Higgs bosons in all relevant channels of double Higgs-strahlung, associated multiple Higgs production and WW/ZZ fusion to Higgs pairs.
134 citations
TL;DR: In this article, the authors measured the total cross sections and the left-right asymmetries with polarized electron beams in a collider and derived the SU(2) gaugino mass, the modulus of the higgsino mass and the ratio of the vacuum expectation values of the two neutral Higgs doublet fields.
Abstract: In most supersymmetric theories, charginos \(\tilde{\chi}^\pm_{1,2}\), mixtures of charged color-neutral gauginos and higgsinos, belong to the class of the lightest supersymmetric particles. They are easy to observe at \(e^+e^-\) colliders. By measuring the total cross sections and the left–right asymmetries with polarized electron beams in \(e^+e^- \rightarrow \tilde{\chi}_i^- \tilde{\chi}_j^+ \, \, [i,j=1,2]\), the chargino masses and the gaugino–higgsino mixing angles can be determined. From these observables the fundamental SUSY parameters can be derived: the SU(2) gaugino mass \(M_2\), the modulus \(|\mu|\) and \(\cos \Phi_\mu\) of the higgsino mass parameter, and \(\tan\beta = v_2/v_1\), the ratio of the vacuum expectation values of the two neutral Higgs doublet fields. The solutions are unique; the CP-violating phase \(\Phi_\mu\) can be determined uniquely by analyzing effects due to the normal polarization of the charginos.
56 citations
24 citations
TL;DR: In this paper, the authors present a systematic overview of the cross sections for the production of pairs of (light) neutral Higgs bosons at the LHC for the Standard Model and its minimal supersymmetric extension.
Abstract: The reconstruction of the Higgs potential in the Standard Model or supersymmetric theories demands the measurement of the trilinear Higgs couplings. These couplings affect the multiple production of Higgs bosons at high energy colliders. We present a systematic overview of the cross sections for the production of pairs of (light) neutral Higgs bosons at the LHC. The analysis is carried out for the Standard Model and its minimal supersymmetric extension.
7 citations
TL;DR: In this paper, the self-energy potential of the Higgs field was reconstructed by the measurement of trilinear and quadrilinear self-couplings, as predicted in the Standard Model or in supersymmetric theories.
Abstract: To establish the Higgs mechanism sui generis experimentally, the self-energy potential of the Higgs field must be reconstructed. This task requires the measurement of the trilinear and quadrilinear self-couplings, as predicted, for instance, in the Standard Model or in supersymmetric theories. The couplings can be probed in multiple Higgs production at high-luminosity e^+e^- linear colliders. Complementing earlier studies to develop a coherent picture of the trilinear couplings, we have analyzed the production of pairs of neutral Higgs bosons in all relevant channels of double Higgs-strahlung, associated multiple Higgs production and WW/ZZ fusion to Higgs pairs.
7 citations
07 Jun 1999
TL;DR: The report of the Higgs working group for the Workshop "Physics at TeV Colliders", Les Houches, France 8-18 June 1999 as discussed by the authors contains 6 separate sections: 1. Measuring Higgs boson couplings at the LHC. 2. Signatures of Heavy Charged Higgs Bosons at the lHC.
Abstract: Report of the Higgs working group for the Workshop "Physics at TeV Colliders", Les Houches, France 8-18 June 1999. It contains 6 separate sections: 1. Measuring Higgs boson couplings at the LHC. 2. Higgs boson production at hadron colliders at NLO. 3. Signatures of Heavy Charged Higgs Bosons at the LHC. 4. Light stop effects and Higgs boson searches at the LHC. 5. Double Higgs production at TeV Colliders in the MSSM. 6. Programs and Tools for Higgs Bosons.
5 citations
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TL;DR: In the Minimal Supersymmetric Standard Model (MSM), the cross section for the associated production of the lightest neutral Higgs boson with top squark pairs can be rather substantial at high energies as discussed by the authors.
Abstract: In the Minimal Supersymmetric Standard Model, the cross section for the associated production of the lightest neutral Higgs boson with the lightest top squark pairs can be rather substantial at high energies. We summarize the properties of this production process at a future e^+e^- linear collider, including the $\gamma \gamma$ mode.
1 citations
01 Jan 1999
TL;DR: In the Minimal Supersymmetric Standard Model (MSM), the cross section for the associated production of the lightest neutral Higgs boson with top squark pairs can be rather substantial at high energies as mentioned in this paper.
Abstract: In the Minimal Supersymmetric Standard Model, the cross section for the associated production of the lightest neutral Higgs boson with the lightest top squark pairs can be rather substantial at high energies. We summarize the properties of this production process at a future e^+e^- linear collider, including the $\gamma \gamma$ mode.
1 citations
Posted Content•
TL;DR: In this article, the virtual effects of supersymmetric extensions of the Standard Model on high-precision electroweak observables measured at LEP/SLC, the Tevatron and CLEO are summarized.
Abstract: I summarise the virtual effects of the new particles predicted by supersymmetric extensions of the Standard Model on the high-precision electroweak observables measured at LEP/SLC, the Tevatron and CLEO. I will then discuss in some details the two-loop SUSY-QCD corrections to the $\rho$ parameter.
TL;DR: In this article, the production of neutral Higgs particles in association with the supersymmetric scalar partners of the third generation quarks at future high-energy hadron colliders and linear machines was analyzed.
Abstract: We analyze the production of neutral Higgs particles in association with the supersymmetric scalar partners of the third generation quarks at future high--energy hadron colliders [upgraded Tevatron, LHC] and $e^+e^-$ linear machines [including the $\gamma \gamma$ option]. In the Minimal Supersymmetric extension of the Standard Model, the cross section for the associated production of the lightest neutral $h$ boson with the lightest top squark pairs can be rather substantial at high energies. This process would open a window for the measurement of the $h \tilde{t} \tilde{t}$ coupling, the potentially largest coupling in the supersymmetric theory.
01 Jan 1999
TL;DR: In this paper, the virtual eects of the new particles predicted by supersymmetric extensions of the Standard Model on the high-precision electroweak observables measured at LEP/SLC, the Tevatron and CLEO are summarized.
Abstract: I summarise the virtual eects of the new particles predicted by supersymmetric extensions of the Standard Model on the high{precision electroweak observables measured at LEP/SLC, the Tevatron and CLEO. I will then discuss in some details the two{loop SUSY{QCD corrections to the parameter.