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Analysis of LEP Constraints on Supersymmetric Models with a Light Gravitino
We propose an analysis of LEP constraints on radiative neutralino decays into a light gravitino, based on the plane of the Higgs mixing parameter mu and the SU(2) gaugino mass M_2. The preliminary LEP 2W constraints in the (mu, M_2) plane are considerably stronger than for supersymmetric models in w...
| Autores principales: | , , |
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| Lenguaje: | eng |
| Publicado: |
1996
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/S0370-2693(97)00019-1 http://cds.cern.ch/record/313549 |
| _version_ | 1780890241975975936 |
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| author | Ellis, John R. Lopez, Jorge L. Nanopoulos, Dimitri V. |
| author_facet | Ellis, John R. Lopez, Jorge L. Nanopoulos, Dimitri V. |
| author_sort | Ellis, John R. |
| collection | CERN |
| description | We propose an analysis of LEP constraints on radiative neutralino decays into a light gravitino, based on the plane of the Higgs mixing parameter mu and the SU(2) gaugino mass M_2. The preliminary LEP 2W constraints in the (mu, M_2) plane are considerably stronger than for supersymmetric models in which the lightest neutralino is stable. A significant portion of the parameter space in which chargino or selectron decay into a final state containing a light gravitino could provide an interpretation of the CDF ee gamma gamma + E_T,miss event can now excluded by the preliminary LEP 2W data. |
| id | cern-313549 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1996 |
| record_format | invenio |
| spelling | cern-3135492019-09-30T06:29:59Zdoi:10.1016/S0370-2693(97)00019-1http://cds.cern.ch/record/313549engEllis, John R.Lopez, Jorge L.Nanopoulos, Dimitri V.Analysis of LEP Constraints on Supersymmetric Models with a Light GravitinoParticle Physics - PhenomenologyWe propose an analysis of LEP constraints on radiative neutralino decays into a light gravitino, based on the plane of the Higgs mixing parameter mu and the SU(2) gaugino mass M_2. The preliminary LEP 2W constraints in the (mu, M_2) plane are considerably stronger than for supersymmetric models in which the lightest neutralino is stable. A significant portion of the parameter space in which chargino or selectron decay into a final state containing a light gravitino could provide an interpretation of the CDF ee gamma gamma + E_T,miss event can now excluded by the preliminary LEP 2W data.hep-ph/9610470CERN-TH-96-306DOE-ER-40717-35CTP-TAMU-53-96ACT-16-96ACT-1996-16CERN-TH-96-306CTP-TAMU-96-53DOE-ER-40717-35oai:cds.cern.ch:3135491996-10-24 |
| spellingShingle | Particle Physics - Phenomenology Ellis, John R. Lopez, Jorge L. Nanopoulos, Dimitri V. Analysis of LEP Constraints on Supersymmetric Models with a Light Gravitino |
| title | Analysis of LEP Constraints on Supersymmetric Models with a Light Gravitino |
| title_full | Analysis of LEP Constraints on Supersymmetric Models with a Light Gravitino |
| title_fullStr | Analysis of LEP Constraints on Supersymmetric Models with a Light Gravitino |
| title_full_unstemmed | Analysis of LEP Constraints on Supersymmetric Models with a Light Gravitino |
| title_short | Analysis of LEP Constraints on Supersymmetric Models with a Light Gravitino |
| title_sort | analysis of lep constraints on supersymmetric models with a light gravitino |
| topic | Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.1016/S0370-2693(97)00019-1 http://cds.cern.ch/record/313549 |
| work_keys_str_mv | AT ellisjohnr analysisoflepconstraintsonsupersymmetricmodelswithalightgravitino AT lopezjorgel analysisoflepconstraintsonsupersymmetricmodelswithalightgravitino AT nanopoulosdimitriv analysisoflepconstraintsonsupersymmetricmodelswithalightgravitino |