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Mass degeneracy of the higgsinos
The search for charginos and neutralinos at LEP2 can become problematic if these particles are almost mass degenerate with the lightest neutralino. Unfortunately this is the case in the region where these particles are higgsino-like. We show that, in this region, radiative corrections to the higgsin...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
1995
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/0370-2693(96)00060-3 http://cds.cern.ch/record/293295 |
| _version_ | 1780888788286832640 |
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| author | Giudice, Gian F. Pomarol, Alex |
| author_facet | Giudice, Gian F. Pomarol, Alex |
| author_sort | Giudice, Gian F. |
| collection | CERN |
| description | The search for charginos and neutralinos at LEP2 can become problematic if these particles are almost mass degenerate with the lightest neutralino. Unfortunately this is the case in the region where these particles are higgsino-like. We show that, in this region, radiative corrections to the higgsino mass splittings can be as large as the tree-level values, if the mixing between the two stop states is large. We also show that the degree of degeneracy of the higgsinos substantially increases if a large phase is present in the higgsino mass term \mu. |
| id | cern-293295 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1995 |
| record_format | invenio |
| spelling | cern-2932952023-03-14T18:54:33Zdoi:10.1016/0370-2693(96)00060-3http://cds.cern.ch/record/293295engGiudice, Gian F.Pomarol, AlexMass degeneracy of the higgsinosParticle Physics - PhenomenologyThe search for charginos and neutralinos at LEP2 can become problematic if these particles are almost mass degenerate with the lightest neutralino. Unfortunately this is the case in the region where these particles are higgsino-like. We show that, in this region, radiative corrections to the higgsino mass splittings can be as large as the tree-level values, if the mixing between the two stop states is large. We also show that the degree of degeneracy of the higgsinos substantially increases if a large phase is present in the higgsino mass term \mu.The search for charginos and neutralinos at LEP2 can become problematic if these particles are almost mass degenerate with the lightest neutralino. Unfortunately this is the case in the region where these particles are higgsino-like. We show that, in this region, radiative corrections to the higgsino mass splittings can be as large as the tree-level values, if the mixing between the two stop states is large. We also show that the degree of degeneracy of the higgsinos substantially increases if a large phase is present in the higgsino mass term $\mu$.The search for charginos and neutralinos at LEP2 can become problematic if these particles are almost mass degenerate with the lightest neutralino. Unfortunately this is the case in the region where these particles are higgsino-like. We show that, in this region, radiative corrections to the higgsino mass splittings can be as large as the tree-level values, if the mixing between the two stop states is large. We also show that the degree of degeneracy of the higgsinos substantially increases if a large phase is present in the higgsino mass term $\mu$.The search for charginos and neutralinos at LEP2 can become problematic if these particles are almost mass degenerate with the lightest neutralino. Unfortunately this is the case in the region where these particles are higgsino-like. We show that, in this region, radiative corrections to the higgsino mass splittings can be as large as the tree-level values, if the mixing between the two stop states is large. We also show that the degree of degeneracy of the higgsinos substantially increases if a large phase is present in the higgsino mass term μ.hep-ph/9512337CERN-TH-95-337CERN-TH-95-337oai:cds.cern.ch:2932951995-12-18 |
| spellingShingle | Particle Physics - Phenomenology Giudice, Gian F. Pomarol, Alex Mass degeneracy of the higgsinos |
| title | Mass degeneracy of the higgsinos |
| title_full | Mass degeneracy of the higgsinos |
| title_fullStr | Mass degeneracy of the higgsinos |
| title_full_unstemmed | Mass degeneracy of the higgsinos |
| title_short | Mass degeneracy of the higgsinos |
| title_sort | mass degeneracy of the higgsinos |
| topic | Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.1016/0370-2693(96)00060-3 http://cds.cern.ch/record/293295 |
| work_keys_str_mv | AT giudicegianf massdegeneracyofthehiggsinos AT pomarolalex massdegeneracyofthehiggsinos |