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Limits on Sparticle Dark Matter
Arguments are given that the lightest supersymmetric particle should be a neutralino $\chi$. Minimizing the fine tuning of the gauge hierarchy favours space of the MSSM from the stability of the electroweak vacuum. Co-annihilation with the next-to-lightest supersymmetric particle is potentially sign...
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| Lenguaje: | eng |
| Publicado: |
1999
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| Acceso en línea: | https://dx.doi.org/10.1063/1.59452 http://cds.cern.ch/record/380498 |
| _version_ | 1780893381239504896 |
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| author | Ellis, John R. |
| author_facet | Ellis, John R. |
| author_sort | Ellis, John R. |
| collection | CERN |
| description | Arguments are given that the lightest supersymmetric particle should be a neutralino $\chi$. Minimizing the fine tuning of the gauge hierarchy favours space of the MSSM from the stability of the electroweak vacuum. Co-annihilation with the next-to-lightest supersymmetric particle is potentially significant. Incorporating the latest accelerator constraints from LEP and elsewhere, we find that 50 GeV $\lappeq m_\chi \lappeq$ 600 GeV and $\tan\beta \gappeq$ 2.5, if soft supersymmetry breaking parameters are assumed to be universal. |
| id | cern-380498 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1999 |
| record_format | invenio |
| spelling | cern-3804982019-09-30T06:29:59Zdoi:10.1063/1.59452http://cds.cern.ch/record/380498engEllis, John R.Limits on Sparticle Dark MatterAstrophysics and AstronomyArguments are given that the lightest supersymmetric particle should be a neutralino $\chi$. Minimizing the fine tuning of the gauge hierarchy favours space of the MSSM from the stability of the electroweak vacuum. Co-annihilation with the next-to-lightest supersymmetric particle is potentially significant. Incorporating the latest accelerator constraints from LEP and elsewhere, we find that 50 GeV $\lappeq m_\chi \lappeq$ 600 GeV and $\tan\beta \gappeq$ 2.5, if soft supersymmetry breaking parameters are assumed to be universal.Arguments are given that the lightest supersymmetric particle should be a neutralino $\chi$. Minimizing the fine tuning of the gauge hierarchy favours $\Omega_{\chi} h^2 \sim 0.1$. There are important constraints on the parameter space of the MSSM from the stability of the electroweak vacuum. Co-annihilation with the next-to-lightest supersymmetric particle is potentially significant. Incorporating the latest accelerator constraints from LEP and elsewhere, we find that 50 GeV $\lappeq m_\chi \lappeq$ 600 GeV and $\tan\beta \gappeq$ 2.5, if soft supersymmetry breaking parameters are assumed to be universal.Arguments are given that the lightest supersymmetric particle should be a neutralino χ. Minimizing the fine tuning of the gauge hierarchy favours Ωχh2∼0.1. There are important constraints on the parameter space as the MSSM from the stability of the electroweak vacuum. Co-annihilation with the next-to-lightest supersymmetric particle is potentially significant. Incorporating the latest accelerator constraints from LEP and elsewhere, we find that 50 GeV≲mχ≲600 GeV and tan β≳2.5. if soft supersymmetry breaking parameters are assumed to be universal.astro-ph/9903003CERN-TH-99-41CERN-TH-99-041oai:cds.cern.ch:3804981999-03-02 |
| spellingShingle | Astrophysics and Astronomy Ellis, John R. Limits on Sparticle Dark Matter |
| title | Limits on Sparticle Dark Matter |
| title_full | Limits on Sparticle Dark Matter |
| title_fullStr | Limits on Sparticle Dark Matter |
| title_full_unstemmed | Limits on Sparticle Dark Matter |
| title_short | Limits on Sparticle Dark Matter |
| title_sort | limits on sparticle dark matter |
| topic | Astrophysics and Astronomy |
| url | https://dx.doi.org/10.1063/1.59452 http://cds.cern.ch/record/380498 |
| work_keys_str_mv | AT ellisjohnr limitsonsparticledarkmatter |