The importance of flavor in SMEFT Electroweak Precision Fits
Abstract Effective field theory tools are essential for exploring non-Standard Model physics at the LHC in the absence of the discovery of new light particles. Predictions for observables are typically made at the lowest order in the QCD and electroweak expansions in the Standard Model effective fie...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-05-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP05(2023)208 |
| _version_ | 1797736514702016512 |
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| author | Luigi Bellafronte Sally Dawson Pier Paolo Giardino |
| author_facet | Luigi Bellafronte Sally Dawson Pier Paolo Giardino |
| author_sort | Luigi Bellafronte |
| collection | DOAJ |
| description | Abstract Effective field theory tools are essential for exploring non-Standard Model physics at the LHC in the absence of the discovery of new light particles. Predictions for observables are typically made at the lowest order in the QCD and electroweak expansions in the Standard Model effective field theory (SMEFT) and often ignore the effects of flavor. Here, we present results for electroweak precision observables (EWPOs) at the next-to-leading order QCD and electroweak expansions (NLO) of the SMEFT with an arbitrary flavor structure for the fermion operators. Numerical NLO SMEFT fits to EWPOs have a strong dependence on the assumed flavor structures and we demonstrate this using various popular assumptions for flavor symmetries. |
| first_indexed | 2024-03-12T13:14:59Z |
| format | Article |
| id | doaj.art-e5745a4d4bdf490994fa61fdd06b7a73 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-12T13:14:59Z |
| publishDate | 2023-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-e5745a4d4bdf490994fa61fdd06b7a732023-08-27T11:05:26ZengSpringerOpenJournal of High Energy Physics1029-84792023-05-012023513510.1007/JHEP05(2023)208The importance of flavor in SMEFT Electroweak Precision FitsLuigi Bellafronte0Sally Dawson1Pier Paolo Giardino2Instituto Galego de Física de Altas Enerxías, Universidade de Santiago de CompostelaHigh Energy Theory Group, Department of Physics, Brookhaven National LaboratoryInstituto Galego de Física de Altas Enerxías, Universidade de Santiago de CompostelaAbstract Effective field theory tools are essential for exploring non-Standard Model physics at the LHC in the absence of the discovery of new light particles. Predictions for observables are typically made at the lowest order in the QCD and electroweak expansions in the Standard Model effective field theory (SMEFT) and often ignore the effects of flavor. Here, we present results for electroweak precision observables (EWPOs) at the next-to-leading order QCD and electroweak expansions (NLO) of the SMEFT with an arbitrary flavor structure for the fermion operators. Numerical NLO SMEFT fits to EWPOs have a strong dependence on the assumed flavor structures and we demonstrate this using various popular assumptions for flavor symmetries.https://doi.org/10.1007/JHEP05(2023)208Electroweak Precision PhysicsHigher Order Electroweak CalculationsSMEFT |
| spellingShingle | Luigi Bellafronte Sally Dawson Pier Paolo Giardino The importance of flavor in SMEFT Electroweak Precision Fits Journal of High Energy Physics Electroweak Precision Physics Higher Order Electroweak Calculations SMEFT |
| title | The importance of flavor in SMEFT Electroweak Precision Fits |
| title_full | The importance of flavor in SMEFT Electroweak Precision Fits |
| title_fullStr | The importance of flavor in SMEFT Electroweak Precision Fits |
| title_full_unstemmed | The importance of flavor in SMEFT Electroweak Precision Fits |
| title_short | The importance of flavor in SMEFT Electroweak Precision Fits |
| title_sort | importance of flavor in smeft electroweak precision fits |
| topic | Electroweak Precision Physics Higher Order Electroweak Calculations SMEFT |
| url | https://doi.org/10.1007/JHEP05(2023)208 |
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