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The Extent of the Stop Coannihilation Strip
Many supersymmetric models such as the CMSSM feature a strip in parameter space where the lightest neutralino \chi is identified as the lightest supersymmetric particle (LSP), the lighter stop squark \tilde t_1 is the next-to-lightest supersymmetric particle (NLSP), and the relic \chi cold dark matt...
Autores principales: | , , |
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Lenguaje: | eng |
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2014
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1140/epjc/s10052-014-2947-7 http://cds.cern.ch/record/1699028 |
_version_ | 1780936218481000448 |
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author | Ellis, John Olive, Keith A. Zheng, Jiaming |
author_facet | Ellis, John Olive, Keith A. Zheng, Jiaming |
author_sort | Ellis, John |
collection | CERN |
description | Many supersymmetric models such as the CMSSM feature a strip in parameter space where the lightest neutralino \chi is identified as the lightest supersymmetric particle (LSP), the lighter stop squark \tilde t_1 is the next-to-lightest supersymmetric particle (NLSP), and the relic \chi cold dark matter density is brought into the range allowed by astrophysics and cosmology by coannihilation with the lighter stop squark \tilde t_1 NLSP. We calculate the stop coannihilation strip in the CMSSM, incorporating Sommerfeld enhancement effects, and explore the relevant phenomenological constraints and phenomenological signatures. In particular, we show that the \tilde t_1 may weigh several TeV, and its lifetime may be in the nanosecond range, features that are more general than the specific CMSSM scenarios that we study in this paper. |
id | cern-1699028 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2014 |
record_format | invenio |
spelling | cern-16990282022-08-10T20:09:00Zdoi:10.1140/epjc/s10052-014-2947-7http://cds.cern.ch/record/1699028engEllis, JohnOlive, Keith A.Zheng, JiamingThe Extent of the Stop Coannihilation StripParticle Physics - PhenomenologyMany supersymmetric models such as the CMSSM feature a strip in parameter space where the lightest neutralino \chi is identified as the lightest supersymmetric particle (LSP), the lighter stop squark \tilde t_1 is the next-to-lightest supersymmetric particle (NLSP), and the relic \chi cold dark matter density is brought into the range allowed by astrophysics and cosmology by coannihilation with the lighter stop squark \tilde t_1 NLSP. We calculate the stop coannihilation strip in the CMSSM, incorporating Sommerfeld enhancement effects, and explore the relevant phenomenological constraints and phenomenological signatures. In particular, we show that the \tilde t_1 may weigh several TeV, and its lifetime may be in the nanosecond range, features that are more general than the specific CMSSM scenarios that we study in this paper.Many supersymmetric models such as the constrained minimal supersymmetric extension of the Standard Model (CMSSM) feature a strip in parameter space where the lightest neutralino $\chi $ is identified as the lightest supersymmetric particle, the lighter stop squark ${\tilde{t}_1}$ is the next-to-lightest supersymmetric particle (NLSP), and the relic $\chi $ cold dark matter density is brought into the range allowed by astrophysics and cosmology by coannihilation with the lighter stop squark ${\tilde{t}_1}$ NLSP. We calculate the stop coannihilation strip in the CMSSM, incorporating Sommerfeld enhancement effects, and we explore the relevant phenomenological constraints and phenomenological signatures. In particular, we show that the ${\tilde{t}_1}$ may weigh several TeV, and its lifetime may be in the nanosecond range, features that are more general than the specific CMSSM scenarios that we study in this paper.Many supersymmetric models such as the CMSSM feature a strip in parameter space where the lightest neutralino \chi is identified as the lightest supersymmetric particle (LSP), the lighter stop squark \tilde t_1 is the next-to-lightest supersymmetric particle (NLSP), and the relic \chi cold dark matter density is brought into the range allowed by astrophysics and cosmology by coannihilation with the lighter stop squark \tilde t_1 NLSP. We calculate the stop coannihilation strip in the CMSSM, incorporating Sommerfeld enhancement effects, and explore the relevant phenomenological constraints and phenomenological signatures. In particular, we show that the \tilde t_1 may weigh several TeV, and its lifetime may be in the nanosecond range, features that are more general than the specific CMSSM scenarios that we study in this paper.arXiv:1404.5571KCL-PH-TH-2014-17LCTS-2014-16CERN-PH-TH-2014-067FTPI-MINN-14-11UMN-TH-3333-14KCL-PH-TH-2014-17LCTS-2014-16CERN-PH-TH-2014-067UMN-TH-3333-14FTPI-MINN-14-11oai:cds.cern.ch:16990282014-04-22 |
spellingShingle | Particle Physics - Phenomenology Ellis, John Olive, Keith A. Zheng, Jiaming The Extent of the Stop Coannihilation Strip |
title | The Extent of the Stop Coannihilation Strip |
title_full | The Extent of the Stop Coannihilation Strip |
title_fullStr | The Extent of the Stop Coannihilation Strip |
title_full_unstemmed | The Extent of the Stop Coannihilation Strip |
title_short | The Extent of the Stop Coannihilation Strip |
title_sort | extent of the stop coannihilation strip |
topic | Particle Physics - Phenomenology |
url | https://dx.doi.org/10.1140/epjc/s10052-014-2947-7 http://cds.cern.ch/record/1699028 |
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