Neutral MSSM Higgs-boson production at e+e- colliders in the Feynman-diagrammatic approach

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dc.creatorHeinemeyer, S.
dc.creatorHollik, W.
dc.creatorRosiek, J.
dc.creatorWeiglein, G.
dc.date2001-02-07
dc.date.accessioned2026-07-07T12:26:11Z
dc.date.available2026-07-07T12:26:11Z
dc.descriptionWe calculate the cross sections for the neutral Higgs-boson production at e+e- colliders in the Minimal Supersymmetric Standard Model (MSSM) using the Feynman-diagrammatic approach and the on-shell renormalization scheme. We incorporate the Higgs-boson propagator corrections, evaluated up to two-loop order, into the prediction of the cross sections for the Higgs-boson production mechanism e+e- -> hZ, hA. The propagator corrections consist of the full one-loop contribution, including the effects of non-vanishing external momentum, and at the two-loop level of the dominant corrections of O(alpha alpha_s) and further sub-dominant contributions. The results are supplemented with the complete set of one-loop vertex and box corrections. The effects of the two-loop propagator corrections are investigated in detail. We briefly discuss also the effect of the box contributions for high $\sqrt{s}$. We compare our results with the case where only the corrections to the effective mixing angle, evaluated within the renormalization-group-improved one-loop Effective Potential approach, are taken into account. We find agreement better than 10% for LEP2 energies and deviations larger than 20% for $\sqrt{s}$ = 500 GeV.
dc.description26 pages, 9 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0102081
dc.identifierhttp://arxiv.org/abs/hep-ph/0102081
dc.identifierEur.Phys.J.C19:535-546,2001
dc.identifierdoi:10.1007/s100520100631
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214801
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNeutral MSSM Higgs-boson production at e+e- colliders in the Feynman-diagrammatic approach
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