The flavor of UV physics
New physics not far above the TeV scale should leave a pattern of virtual effects in observables at lower energies. What do these effects tell us about the flavor structure of a UV theory? Within the framework of the Standard Model Effective Field Theory (SMEFT), we resolve the flavor structure of t...
Gespeichert in:
| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
May 27, 2021
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| In: |
Journal of high energy physics
Year: 2021, Heft: 5, Pages: 1-52 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP05(2021)257 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP05(2021)257 Verlag, lizenzpflichtig, Volltext: https://link.springer.com/article/10.1007%2FJHEP05%282021%29257 
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| Verfasserangaben: | Sebastian Bruggisser, Ruth Schäfer, Danny van Dyk and Susanne Westhoff |
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| 520 | |a New physics not far above the TeV scale should leave a pattern of virtual effects in observables at lower energies. What do these effects tell us about the flavor structure of a UV theory? Within the framework of the Standard Model Effective Field Theory (SMEFT), we resolve the flavor structure of the Wilson coefficients in a combined analysis of top-quark and B-physics observables. We assume that the Yukawa couplings are the only sources of flavor symmetry breaking, a framework known as Minimal Flavor Violation. Our fits to LHC and b-factory measurements show that combining top and bottom observables is crucial to pin down possible sources of flavor breaking in a UV theory. This analysis includes the full analytic expansion of SMEFT coefficients in Minimal Flavor Violation and a detailed study of SMEFT effects in b → s flavor transitions. | ||
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