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In light of the recent deviation in the W boson mass measurement from the CDF-II, which significantly from the Standard Model (SM) prediction, in this paper we explore the implications of this anomaly within the framework of the Two-Higgs Doublet Model (2HDM). We focus on the scenario where the heavy CP-even H is recognized as the observed Higgs boson at 125 GeV. Our analysis, which incorporates both theoretical and current experimental constraints as well as the new CDF measurement for the W boson mass, shows that the 2HDM parameter space can provide a substantial adjustment, which aligns the predicted W mass more closely with the new CDF \(M_W\) measurement. As a consequence, a positive mass splitting occurs between the charged Higgs boson and all other states, while the degenerate mass scenario ( \(M_{H^\pm } = M_A\) ) is disfavored.

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The W Boson Mass Anomaly within the Inverted Scenario of the Two-Higgs Doublet Model

  • 会议论文

  • 出版模式：

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  • 发表日期：

    2026年

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  • Hamza Abouabid,
  • Abdesslam Arhrib,
  • Rachid Benbrik,
  • Mohamed Krab,
  • Mohamed Ouchemhou

摘要

In light of the recent deviation in the W boson mass measurement from the CDF-II, which significantly from the Standard Model (SM) prediction, in this paper we explore the implications of this anomaly within the framework of the Two-Higgs Doublet Model (2HDM). We focus on the scenario where the heavy CP-even H is recognized as the observed Higgs boson at 125 GeV. Our analysis, which incorporates both theoretical and current experimental constraints as well as the new CDF measurement for the W boson mass, shows that the 2HDM parameter space can provide a substantial adjustment, which aligns the predicted W mass more closely with the new CDF \(M_W\) measurement. As a consequence, a positive mass splitting occurs between the charged Higgs boson and all other states, while the degenerate mass scenario ( \(M_{H^\pm } = M_A\) ) is disfavored.