Interpreting electroweak precision data including the W-mass CDF anomaly
Abstract We perform a global fit of electroweak data, finding that the anomaly in the W mass claimed by the CDF collaboration can be reproduced as a universal new-physics correction to the T parameter or |H † D μ H|2 operator. Contributions at tree-level from multi-TeV new physics can fit the anomal...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-08-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP08(2022)248 |
| _version_ | 1828436168228732928 |
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| author | Alessandro Strumia |
| author_facet | Alessandro Strumia |
| author_sort | Alessandro Strumia |
| collection | DOAJ |
| description | Abstract We perform a global fit of electroweak data, finding that the anomaly in the W mass claimed by the CDF collaboration can be reproduced as a universal new-physics correction to the T parameter or |H † D μ H|2 operator. Contributions at tree-level from multi-TeV new physics can fit the anomaly compatibly with collider bounds: we explore which scalar vacuum expectation values (such as a triplet with zero hypercharge), Z′ vectors (such as a Z′ coupled to the Higgs only), little-Higgs models or higher-dimensional geometries provide good global fits. On the other hand, new physics that contributes at loop-level must be around the weak scale to fit the anomaly. Thereby it generically conflicts with collider bounds, that can be bypassed assuming special kinematics like quasi-degenerate particles that decay into Dark Matter (such as an inert Higgs doublet or appropriate supersymmetric particles). |
| first_indexed | 2024-12-10T19:22:26Z |
| format | Article |
| id | doaj.art-8c14124bf8b849f1bfc008c3377acf8d |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-10T19:22:26Z |
| publishDate | 2022-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-8c14124bf8b849f1bfc008c3377acf8d2022-12-22T01:36:27ZengSpringerOpenJournal of High Energy Physics1029-84792022-08-012022811910.1007/JHEP08(2022)248Interpreting electroweak precision data including the W-mass CDF anomalyAlessandro Strumia0Dipartimento di Fisica “E. Fermi”, Università di PisaAbstract We perform a global fit of electroweak data, finding that the anomaly in the W mass claimed by the CDF collaboration can be reproduced as a universal new-physics correction to the T parameter or |H † D μ H|2 operator. Contributions at tree-level from multi-TeV new physics can fit the anomaly compatibly with collider bounds: we explore which scalar vacuum expectation values (such as a triplet with zero hypercharge), Z′ vectors (such as a Z′ coupled to the Higgs only), little-Higgs models or higher-dimensional geometries provide good global fits. On the other hand, new physics that contributes at loop-level must be around the weak scale to fit the anomaly. Thereby it generically conflicts with collider bounds, that can be bypassed assuming special kinematics like quasi-degenerate particles that decay into Dark Matter (such as an inert Higgs doublet or appropriate supersymmetric particles).https://doi.org/10.1007/JHEP08(2022)248Other Weak Scale BSM ModelsNew Gauge InteractionsExtra Dimensions |
| spellingShingle | Alessandro Strumia Interpreting electroweak precision data including the W-mass CDF anomaly Journal of High Energy Physics Other Weak Scale BSM Models New Gauge Interactions Extra Dimensions |
| title | Interpreting electroweak precision data including the W-mass CDF anomaly |
| title_full | Interpreting electroweak precision data including the W-mass CDF anomaly |
| title_fullStr | Interpreting electroweak precision data including the W-mass CDF anomaly |
| title_full_unstemmed | Interpreting electroweak precision data including the W-mass CDF anomaly |
| title_short | Interpreting electroweak precision data including the W-mass CDF anomaly |
| title_sort | interpreting electroweak precision data including the w mass cdf anomaly |
| topic | Other Weak Scale BSM Models New Gauge Interactions Extra Dimensions |
| url | https://doi.org/10.1007/JHEP08(2022)248 |
| work_keys_str_mv | AT alessandrostrumia interpretingelectroweakprecisiondataincludingthewmasscdfanomaly |