A Search for Neutral Higgs Bosons in the MSSM and Models with Two Scalar Field Doublets

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dc.creatorThe OPAL Collaboration
dc.creatoral, K. Ackerstaff et
dc.date1998-03-21
dc.date.accessioned2026-07-07T12:02:20Z
dc.date.available2026-07-07T12:02:20Z
dc.descriptionA search is described for the neutral Higgs bosons h^0 and A^0 predicted by models with two scalar field doublets and, in particular, the Minimal Supersymmetric Standard Model (MSSM). The search in the Z^0 h^0 and h^0 A^0 production channels is based on data corresponding to an integrated luminosity of 25 pb^{-1} from e^+e^- collisions at centre-of-mass energies between 130 and 172 GeV collected with the OPAL detector at LEP. The observation of a number of candidates consistent with Standard Model background expectations is used in combination with earlier results from data collected at the Z^0 resonance to set limits on m_h and m_A in general models with two scalar field doublets and in the MSSM. For example, in the MSSM, for tan(beta) > 1, minimal and maximal scalar top quark mixing and soft SUSY-breaking masses of 1 TeV, the 95% confidence level limits m_h > 59.0 GeV and m_A > 59.5 GeV are obtained. For the first time, the MSSM parameter space is explored in a detailed scan.
dc.description40 pages, LaTeX, uses a4p.sty, 13 eps figures included, submitted to Eur. Phys. J. C
dc.identifierhttps://arxiv.org/abs/hep-ex/9803019
dc.identifierhttp://arxiv.org/abs/hep-ex/9803019
dc.identifierEur.Phys.J.C5:19-40,1998
dc.identifierdoi:10.1007/s100520050245
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207405
dc.subjectHigh Energy Physics - Experiment
dc.titleA Search for Neutral Higgs Bosons in the MSSM and Models with Two Scalar Field Doublets
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