Matching coefficients for αs and mb to [omicron] (α s 2 ) in the MSSM
We compute the exact two-loop matching coefficients for the strong coupling constant α s and the bottom-quark mass m b within the Minimal Supersymmetric Standard Model (MSSM), taking into account ##IMG## [http://ej.iop.org/icons/Entities/calO.gif] Script O (α s 2 ) contributions from Supersymmetric...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
12 February 2009
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| In: |
Journal of high energy physics
Year: 2009, Heft: 02 |
| ISSN: | 1029-8479 |
| DOI: | 10.1088/1126-6708/2009/02/037 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1088/1126-6708/2009/02/037 Verlag, kostenfrei, Volltext: http://stacks.iop.org/1126-6708/2009/i=02/a=037 
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| Verfasserangaben: | A. Bauer, L. Mihaila and J. Salomon |
| Zusammenfassung: | We compute the exact two-loop matching coefficients for the strong coupling constant α s and the bottom-quark mass m b within the Minimal Supersymmetric Standard Model (MSSM), taking into account ##IMG## [http://ej.iop.org/icons/Entities/calO.gif] Script O (α s 2 ) contributions from Supersymmetric Quantum Chromodynamics (SQCD). We find that the explicit mass pattern of the supersymmetric particles has a significant impact on the predictions of α s and m b at high energies. Further on, the three-loop corrections exceed the uncertainty due to the current experimental accuracy. In case of the the running bottom-quark mass, they can reach in the large tan β regime up to 30% of the tree-level value. |
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| Beschreibung: | Im Titel sind "s" und "b" tiefgestellt, in der runden Klammer ist "2" hoch- und "s" tiefgestellt Gesehen am 30.11.2017 Im Titel ist "Omicron" als griechischer Buchstabe dargestellt |
| Beschreibung: | Online Resource |
| ISSN: | 1029-8479 |
| DOI: | 10.1088/1126-6708/2009/02/037 |