Polarization and Spin Effects in Neutralino Production and Decay in Supersymmetric Models

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dc.creatorMoortgat-Pick, G.
dc.creatorHesselbach, S.
dc.creatorFranke, F.
dc.creatorFraas, H.
dc.date1999-09-29
dc.date1999-10-11
dc.date.accessioned2026-07-07T04:08:14Z
dc.date.available2026-07-07T04:08:14Z
dc.descriptionWe study polarization and spin correlation effects in the MSSM and in extended supersymmetric models at an e^+e^- linear collider with polarized beams. The production of light neutralinos e^+ e^- --> \tildeχ^0_1 \tildeχ^0_2 and the subsequent decay \tildeχ^0_2 --> \tildeχ^0_1 e^+ e^- including full spin correlations is compared in three supersymmetric models: MSSM, NMSSM and an E_6-inspired model with an additional U(1)' gauge group. It is shown that polarization and spin effects can lead to a complete different behavior of these models. Finally, the dependence of the cross section and the decay angular distribution on the gaugino mass parameter M_1 for polarized beams is briefly outlined.
dc.description6 pages, LaTeX, 8 eps figures, uses sprocl.sty which is included; contribution to the proceedings of the International Workshop on Linear Colliders, Sitges, Barcelona, Spain, April 28 - May 5, 1999; reference and acknowledgment added
dc.identifierhttps://arxiv.org/abs/hep-ph/9909549
dc.identifierhttp://arxiv.org/abs/hep-ph/9909549
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/49453
dc.subjectHigh Energy Physics - Phenomenology
dc.titlePolarization and Spin Effects in Neutralino Production and Decay in Supersymmetric Models
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