Xin-Qiang Li , Ze-Jun Xie , Ya-Dong Yang , Xing-Bo Yuan
{"title":"Correlating the CDF W-mass shift with the muon g − 2 and the b → sℓ+ℓ− transitions","authors":"Xin-Qiang Li , Ze-Jun Xie , Ya-Dong Yang , Xing-Bo Yuan","doi":"10.1016/j.nuclphysb.2024.116646","DOIUrl":null,"url":null,"abstract":"<div><p>Motivated by the latest CDF <em>W</em>-mass measurement as well as the muon <span><math><mi>g</mi><mo>−</mo><mn>2</mn></math></span> anomaly and the discrepancies observed in <span><math><mi>b</mi><mo>→</mo><mi>s</mi><msup><mrow><mi>ℓ</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>ℓ</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> transitions, we propose an extension of the Standard Model (SM) with the <span><math><mi>S</mi><mi>U</mi><msub><mrow><mo>(</mo><mn>2</mn><mo>)</mo></mrow><mrow><mi>L</mi></mrow></msub></math></span>-singlet vector-like fermion partners that are featured by additional <span><math><mi>U</mi><msup><mrow><mo>(</mo><mn>1</mn><mo>)</mo></mrow><mrow><mo>′</mo></mrow></msup></math></span> gauge symmetry. The fermion partners have the same SM quantum numbers as of the right-handed SM fermions, and can therefore mix with the latter after the electroweak and the <span><math><mi>U</mi><msup><mrow><mo>(</mo><mn>1</mn><mo>)</mo></mrow><mrow><mo>′</mo></mrow></msup></math></span> symmetry breaking. As a result, desirable loop-level corrections to the <span><math><msub><mrow><mo>(</mo><mi>g</mi><mo>−</mo><mn>2</mn><mo>)</mo></mrow><mrow><mi>μ</mi></mrow></msub></math></span>, the <em>W</em>-boson mass <span><math><msub><mrow><mi>m</mi></mrow><mrow><mi>W</mi></mrow></msub></math></span> and the Wilson coefficient <span><math><msub><mrow><mi>C</mi></mrow><mrow><mn>9</mn></mrow></msub></math></span> in <span><math><mi>b</mi><mo>→</mo><mi>s</mi><msup><mrow><mi>μ</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>μ</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> transitions can be obtained. The final allowed parameter space is also consistent with the constraints from the <span><math><mi>Z</mi><mo>→</mo><msup><mrow><mi>μ</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>μ</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> decay, the neutrino trident production and the LHC direct searches for the vector-like quarks and leptons.</p></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":"1006 ","pages":"Article 116646"},"PeriodicalIF":2.5000,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0550321324002128/pdfft?md5=d962ea6e3361099bdf9771cd98dd6b7a&pid=1-s2.0-S0550321324002128-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Physics B","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0550321324002128","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, PARTICLES & FIELDS","Score":null,"Total":0}
引用次数: 0
Abstract
Motivated by the latest CDF W-mass measurement as well as the muon anomaly and the discrepancies observed in transitions, we propose an extension of the Standard Model (SM) with the -singlet vector-like fermion partners that are featured by additional gauge symmetry. The fermion partners have the same SM quantum numbers as of the right-handed SM fermions, and can therefore mix with the latter after the electroweak and the symmetry breaking. As a result, desirable loop-level corrections to the , the W-boson mass and the Wilson coefficient in transitions can be obtained. The final allowed parameter space is also consistent with the constraints from the decay, the neutrino trident production and the LHC direct searches for the vector-like quarks and leptons.
期刊介绍:
Nuclear Physics B focuses on the domain of high energy physics, quantum field theory, statistical systems, and mathematical physics, and includes four main sections: high energy physics - phenomenology, high energy physics - theory, high energy physics - experiment, and quantum field theory, statistical systems, and mathematical physics. The emphasis is on original research papers (Frontiers Articles or Full Length Articles), but Review Articles are also welcome.