Correlating the CDF W-boson mass shift with the b → sℓ+ℓ− anomalies
The recently updated measurement of the W-boson mass by the CDF collaboration exhibits a 7σ deviation from the SM expectation, which may imply a sign of new physics beyond the SM. The observed discrepancy could be explained by new fermions that carry the electroweak gauge charges and affect the vacu...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-03-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269322007857 |
| _version_ | 1797905332174848000 |
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| author | Xin-Qiang Li Ze-Jun Xie Ya-Dong Yang Xing-Bo Yuan |
| author_facet | Xin-Qiang Li Ze-Jun Xie Ya-Dong Yang Xing-Bo Yuan |
| author_sort | Xin-Qiang Li |
| collection | DOAJ |
| description | The recently updated measurement of the W-boson mass by the CDF collaboration exhibits a 7σ deviation from the SM expectation, which may imply a sign of new physics beyond the SM. The observed discrepancy could be explained by new fermions that carry the electroweak gauge charges and affect the vacuum polarization of gauge bosons. Notably, if the new fermions also have the same quantum numbers as of the SM quarks, they can mix with the latter and thus modify the penguin diagrams governing the b→sℓ+ℓ− transitions. Therefore, the W-boson mass shift could be related to the b→sℓ+ℓ− anomalies observed by the LHCb collaboration during the past few years. To investigate this possibility, we consider in this letter a model containing a vector-like top partner gauged under a new U(1)′ symmetry. It is found that the latest CDF mW measurement and the b→sℓ+ℓ− anomalies can be simultaneously accommodated at 2σ level. |
| first_indexed | 2024-04-10T10:04:39Z |
| format | Article |
| id | doaj.art-786da1ea191e4be483dc9fb18c71b112 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-10T10:04:39Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-786da1ea191e4be483dc9fb18c71b1122023-02-16T04:17:28ZengElsevierPhysics Letters B0370-26932023-03-01838137651Correlating the CDF W-boson mass shift with the b → sℓ+ℓ− anomaliesXin-Qiang Li0Ze-Jun Xie1Ya-Dong Yang2Xing-Bo Yuan3Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, Wuhan, Hubei 430079, ChinaInstitute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, Wuhan, Hubei 430079, ChinaInstitute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, Wuhan, Hubei 430079, China; Institute of Particle and Nuclear Physics, Henan Normal University, Xinxiang, Henan 453007, ChinaInstitute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, Wuhan, Hubei 430079, China; Corresponding author.The recently updated measurement of the W-boson mass by the CDF collaboration exhibits a 7σ deviation from the SM expectation, which may imply a sign of new physics beyond the SM. The observed discrepancy could be explained by new fermions that carry the electroweak gauge charges and affect the vacuum polarization of gauge bosons. Notably, if the new fermions also have the same quantum numbers as of the SM quarks, they can mix with the latter and thus modify the penguin diagrams governing the b→sℓ+ℓ− transitions. Therefore, the W-boson mass shift could be related to the b→sℓ+ℓ− anomalies observed by the LHCb collaboration during the past few years. To investigate this possibility, we consider in this letter a model containing a vector-like top partner gauged under a new U(1)′ symmetry. It is found that the latest CDF mW measurement and the b→sℓ+ℓ− anomalies can be simultaneously accommodated at 2σ level.http://www.sciencedirect.com/science/article/pii/S0370269322007857 |
| spellingShingle | Xin-Qiang Li Ze-Jun Xie Ya-Dong Yang Xing-Bo Yuan Correlating the CDF W-boson mass shift with the b → sℓ+ℓ− anomalies Physics Letters B |
| title | Correlating the CDF W-boson mass shift with the b → sℓ+ℓ− anomalies |
| title_full | Correlating the CDF W-boson mass shift with the b → sℓ+ℓ− anomalies |
| title_fullStr | Correlating the CDF W-boson mass shift with the b → sℓ+ℓ− anomalies |
| title_full_unstemmed | Correlating the CDF W-boson mass shift with the b → sℓ+ℓ− anomalies |
| title_short | Correlating the CDF W-boson mass shift with the b → sℓ+ℓ− anomalies |
| title_sort | correlating the cdf w boson mass shift with the b sl l anomalies |
| url | http://www.sciencedirect.com/science/article/pii/S0370269322007857 |
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