The current status of fine-tuning in supersymmetry
Abstract In this paper, we minimize and compare two different fine-tuning measures in four high-scale supersymmetric models that are embedded in the MSSM. In addition, we determine the impact of current and future dark matter direct detection and collider experiments on the fine-tuning. We then comp...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-01-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP01(2020)147 |
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| author | Melissa van Beekveld Sascha Caron Roberto Ruiz de Austri |
| author_facet | Melissa van Beekveld Sascha Caron Roberto Ruiz de Austri |
| author_sort | Melissa van Beekveld |
| collection | DOAJ |
| description | Abstract In this paper, we minimize and compare two different fine-tuning measures in four high-scale supersymmetric models that are embedded in the MSSM. In addition, we determine the impact of current and future dark matter direct detection and collider experiments on the fine-tuning. We then compare the low-scale electroweak measure with the high-scale Barbieri-Giudice measure. We find that they reduce to the same value when the higgsino parameter drives the degree of fine-tuning. We also find spectra where the high-scale measure turns out to be lower than the low-scale measure. Depending on the high-scale model and fine-tuning definition, we find a minimal fine-tuning of 3–38 (corresponding to O(10–1)%) for the low-scale measure, and 63–571 (corresponding to O(1–0.1)%) for the high-scale measure. We stress that it is too early to conclude on the fate of supersymmetry, based only on the fine-tuning paradigm. |
| format | Article |
| id | doaj-art-254d852571e346e4884ee58c882ddb58 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-254d852571e346e4884ee58c882ddb582025-01-26T12:11:39ZengSpringerOpenJournal of High Energy Physics1029-84792020-01-012020114110.1007/JHEP01(2020)147The current status of fine-tuning in supersymmetryMelissa van Beekveld0Sascha Caron1Roberto Ruiz de Austri2Theoretical High Energy Physics, Radboud University NijmegenTheoretical High Energy Physics, Radboud University NijmegenInstituto de Física CorpuscularAbstract In this paper, we minimize and compare two different fine-tuning measures in four high-scale supersymmetric models that are embedded in the MSSM. In addition, we determine the impact of current and future dark matter direct detection and collider experiments on the fine-tuning. We then compare the low-scale electroweak measure with the high-scale Barbieri-Giudice measure. We find that they reduce to the same value when the higgsino parameter drives the degree of fine-tuning. We also find spectra where the high-scale measure turns out to be lower than the low-scale measure. Depending on the high-scale model and fine-tuning definition, we find a minimal fine-tuning of 3–38 (corresponding to O(10–1)%) for the low-scale measure, and 63–571 (corresponding to O(1–0.1)%) for the high-scale measure. We stress that it is too early to conclude on the fate of supersymmetry, based only on the fine-tuning paradigm.https://doi.org/10.1007/JHEP01(2020)147Supersymmetry Phenomenology |
| spellingShingle | Melissa van Beekveld Sascha Caron Roberto Ruiz de Austri The current status of fine-tuning in supersymmetry Journal of High Energy Physics Supersymmetry Phenomenology |
| title | The current status of fine-tuning in supersymmetry |
| title_full | The current status of fine-tuning in supersymmetry |
| title_fullStr | The current status of fine-tuning in supersymmetry |
| title_full_unstemmed | The current status of fine-tuning in supersymmetry |
| title_short | The current status of fine-tuning in supersymmetry |
| title_sort | current status of fine tuning in supersymmetry |
| topic | Supersymmetry Phenomenology |
| url | https://doi.org/10.1007/JHEP01(2020)147 |
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