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Hadronic uncertainties versus new physics for the W boson mass and Muon g − 2 anomalies
There are now two single measurements of precision observables that have major anomalies in the Standard Model: the recent CDF measurement of the W mass shows a 7σ deviation and the Muon g − 2 experiment at FNAL confirmed a long-standing anomaly, implying a 4.2σ deviation. Doubts regarding new physi...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9902446/ https://www.ncbi.nlm.nih.gov/pubmed/36746959 http://dx.doi.org/10.1038/s41467-023-36366-7 |
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author | Athron, Peter Fowlie, Andrew Lu, Chih-Ting Wu, Lei Wu, Yongcheng Zhu, Bin |
author_facet | Athron, Peter Fowlie, Andrew Lu, Chih-Ting Wu, Lei Wu, Yongcheng Zhu, Bin |
author_sort | Athron, Peter |
collection | PubMed |
description | There are now two single measurements of precision observables that have major anomalies in the Standard Model: the recent CDF measurement of the W mass shows a 7σ deviation and the Muon g − 2 experiment at FNAL confirmed a long-standing anomaly, implying a 4.2σ deviation. Doubts regarding new physics interpretations of these anomalies could stem from uncertainties in the common hadronic contributions. We demonstrate that these two anomalies pull the hadronic contributions in opposite directions by performing electroweak fits in which the hadronic contribution was allowed to float. The fits show that including the g − 2 measurement worsens the tension with the CDF measurement and conversely that adjustments that alleviate the CDF tension worsen the g − 2 tension beyond 5σ. This means that if we adopt the CDF W mass measurement, the case for new physics in either the W mass or muon g − 2 is inescapable regardless of the size of the SM hadronic contributions. Lastly, we demonstrate that a mixed scalar leptoquark extension of the Standard Model could explain both anomalies simultaneously. |
format | Online Article Text |
id | pubmed-9902446 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-99024462023-02-08 Hadronic uncertainties versus new physics for the W boson mass and Muon g − 2 anomalies Athron, Peter Fowlie, Andrew Lu, Chih-Ting Wu, Lei Wu, Yongcheng Zhu, Bin Nat Commun Article There are now two single measurements of precision observables that have major anomalies in the Standard Model: the recent CDF measurement of the W mass shows a 7σ deviation and the Muon g − 2 experiment at FNAL confirmed a long-standing anomaly, implying a 4.2σ deviation. Doubts regarding new physics interpretations of these anomalies could stem from uncertainties in the common hadronic contributions. We demonstrate that these two anomalies pull the hadronic contributions in opposite directions by performing electroweak fits in which the hadronic contribution was allowed to float. The fits show that including the g − 2 measurement worsens the tension with the CDF measurement and conversely that adjustments that alleviate the CDF tension worsen the g − 2 tension beyond 5σ. This means that if we adopt the CDF W mass measurement, the case for new physics in either the W mass or muon g − 2 is inescapable regardless of the size of the SM hadronic contributions. Lastly, we demonstrate that a mixed scalar leptoquark extension of the Standard Model could explain both anomalies simultaneously. Nature Publishing Group UK 2023-02-07 /pmc/articles/PMC9902446/ /pubmed/36746959 http://dx.doi.org/10.1038/s41467-023-36366-7 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Athron, Peter Fowlie, Andrew Lu, Chih-Ting Wu, Lei Wu, Yongcheng Zhu, Bin Hadronic uncertainties versus new physics for the W boson mass and Muon g − 2 anomalies |
title | Hadronic uncertainties versus new physics for the W boson mass and Muon g − 2 anomalies |
title_full | Hadronic uncertainties versus new physics for the W boson mass and Muon g − 2 anomalies |
title_fullStr | Hadronic uncertainties versus new physics for the W boson mass and Muon g − 2 anomalies |
title_full_unstemmed | Hadronic uncertainties versus new physics for the W boson mass and Muon g − 2 anomalies |
title_short | Hadronic uncertainties versus new physics for the W boson mass and Muon g − 2 anomalies |
title_sort | hadronic uncertainties versus new physics for the w boson mass and muon g − 2 anomalies |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9902446/ https://www.ncbi.nlm.nih.gov/pubmed/36746959 http://dx.doi.org/10.1038/s41467-023-36366-7 |
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