We propose an explanation to the new W mass measurement recently reported by the CDF collaboration, which is larger than the standard model expectation by about 7 standard deviations. To alleviate the tensions that are imposed on the electroweak sector by the new W mass measurement, we carry out an analysis in the Stueckelberg extended standard model where a new neutral gauge boson appears which mixes with the two neutral gauge bosons in the electroweak sector both via the Stueckelberg mass terms and via the gauge invariant Stueckelberg-Higgs portal interaction and spoils the custodial symmetry at the tree level so that the simple relation between the W boson mass and the Z boson mass does not hold. We find that such an extension increases the W boson mass if the new gauge boson mass is larger than the Z boson mass. We further show that there exists a significant part of the parameter space in the extended model which includes the CDF mass anomaly and is consistent with the various observables at the Z pole and consistent with the ATLAS dilepton limits. The Stueckelberg boson, which resolves the CDF W mass anomaly, should be searchable in future LHC experiments.
{ "license": [ { "url": "http://creativecommons.org/licenses/by/3.0/", "license": "CC-BY-3.0" } ], "copyright": [ { "holder": "The Author(s)", "statement": "The Author(s)", "year": "2022" } ], "control_number": "72686", "_oai": { "updated": "2022-10-21T15:31:52Z", "id": "oai:repo.scoap3.org:72686", "sets": [ "PLB" ] }, "authors": [ { "affiliations": [ { "country": "China", "value": "Department of Physics, Nanjing University, Nanjing, China" } ], "surname": "Du", "email": "mingxuandu@smail.nju.edu.cn", "full_name": "Du, Mingxuan", "given_names": "Mingxuan" }, { "surname": "Liu", "given_names": "Zuowei", "affiliations": [ { "country": "China", "value": "Department of Physics, Nanjing University, Nanjing, China" }, { "country": "China", "value": "CAS Center for Excellence in Particle Physics, Beijing, China" } ], "full_name": "Liu, Zuowei", "orcid": "0000-0002-8377-9317", "email": "zuoweiliu@nju.edu.cn" }, { "affiliations": [ { "country": "USA", "value": "Department of Physics, Northeastern University, Boston, USA" } ], "surname": "Nath", "email": "p.nath@northeastern.edu", "full_name": "Nath, Pran", "given_names": "Pran" } ], "_files": [ { "checksum": "md5:4fab8198b00b33cc9ddb5aa13efc65cd", "filetype": "xml", "bucket": "4b97ad17-7ed3-4421-ad4d-b2463fab3e89", "version_id": "20131527-0c92-48e6-afc1-48970bb0398c", "key": "10.1016/j.physletb.2022.137454.xml", "size": 242661 }, { "checksum": "md5:f6baf803c29241b20c07b1d53b37fd70", "filetype": "pdf", "bucket": "4b97ad17-7ed3-4421-ad4d-b2463fab3e89", "version_id": "f6b5106b-afe3-48b8-9a26-9cb21ee40ab8", "key": "10.1016/j.physletb.2022.137454.pdf", "size": 376205 }, { "checksum": "md5:c4a14cdd01f8af41bdd18761d86c6d0c", "filetype": "pdf/a", "bucket": "4b97ad17-7ed3-4421-ad4d-b2463fab3e89", "version_id": "b2b87494-27f4-4973-8e66-ea7f45cf5763", "key": "10.1016/j.physletb.2022.137454_a.pdf", "size": 702008 } ], "record_creation_date": "2022-09-15T12:30:22.417137", "titles": [ { "source": "Elsevier", "title": "CDF W mass anomaly with a Stueckelberg-Higgs portal" } ], "collections": [ { "primary": "Physics Letters B" } ], "dois": [ { "value": "10.1016/j.physletb.2022.137454" } ], "publication_info": [ { "journal_volume": "834 C", "journal_title": "Physics Letters B", "material": "article", "artid": "137454", "year": 2022 } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "abstracts": [ { "source": "Elsevier", "value": "We propose an explanation to the new W mass measurement recently reported by the CDF collaboration, which is larger than the standard model expectation by about 7 standard deviations. To alleviate the tensions that are imposed on the electroweak sector by the new W mass measurement, we carry out an analysis in the Stueckelberg extended standard model where a new neutral gauge boson appears which mixes with the two neutral gauge bosons in the electroweak sector both via the Stueckelberg mass terms and via the gauge invariant Stueckelberg-Higgs portal interaction and spoils the custodial symmetry at the tree level so that the simple relation between the W boson mass and the Z boson mass does not hold. We find that such an extension increases the W boson mass if the new gauge boson mass is larger than the Z boson mass. We further show that there exists a significant part of the parameter space in the extended model which includes the CDF mass anomaly and is consistent with the various observables at the Z pole and consistent with the ATLAS dilepton limits. The Stueckelberg <math><msubsup><mrow><mi>Z</mi></mrow><mrow><mi>St</mi></mrow><mrow><mo>\u2032</mo></mrow></msubsup></math> boson, which resolves the CDF W mass anomaly, should be searchable in future LHC experiments." } ], "imprints": [ { "date": "2022-10-21", "publisher": "Elsevier" } ], "acquisition_source": { "date": "2022-10-21T15:31:27.008397", "source": "Elsevier", "method": "Elsevier", "submission_number": "39c027e4515511eda33ab6e03099cfc1" } }