Light Higgsino Detection at LEP1.5

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dc.creatorAmbrosanio, S.
dc.creatorCarena, M.
dc.creatorMele, B.
dc.creatorWagner, C. E. M.
dc.date1995-11-07
dc.date1996-10-17
dc.date.accessioned2026-07-07T10:58:13Z
dc.date.available2026-07-07T10:58:13Z
dc.descriptionWithin the minimal supersymmetric extension of the Standard Model, the best fit to the most recent precision-measurement data requires charginos and neutralinos, with dominant Higgsino components and with masses within the reach of LEP1.5 ($\sqrt{s}=140$ GeV). In this work, we present a detailed analysis of the neutralino and chargino production processes for the favoured region of parameter space, that is low values of $|μ|$ and either low or large values of $\tanβ$. We find that chargino and neutralino searches can cover the Higgsino region in the ($μ,M_2$) plane for values of $M_2 \simlt 1$ TeV, at the next phases of the LEP collider. We also show that, due mainly to phase-space constraints, the lightest neutralinos should be more easily detectable than charginos in most of the parameter space preferred by precision-measurement data.
dc.description16 pages, 8 Figures, LateX. Figures now include initial state radiation effects on the cross sections.
dc.identifierhttps://arxiv.org/abs/hep-ph/9511259
dc.identifierhttp://arxiv.org/abs/hep-ph/9511259
dc.identifierPhys.Lett.B373:107-116,1996
dc.identifierdoi:10.1016/0370-2693(96)00129-3
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187019
dc.subjectHigh Energy Physics - Phenomenology
dc.titleLight Higgsino Detection at LEP1.5
dc.typetext

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