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arXiv · 2405.03127

When The Standard Model Higgs Meets Its Lighter 95 GeV Twin

Abdesslam Arhrib·Khiem Hong Phan·Van Que Tran·Tzu-Chiang Yuan
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Abstract

Recent reports from the Large Hadron Collider indicate two excesses: one in the lighter Higgs mass region around 95 GeV, and another in the rare $Z \gamma$ final state of the Standard Model (SM) 125 GeV Higgs decay. These anomalies are analyzed within the minimal gauged two-Higgs-doublet model (G2HDM). A viable parameter space in G2HDM is identified that can account for both excesses. Within the viable parameter space, we find a strong correlation between the signal strengths of the SM 125 GeV Higgs decays into $\gamma \gamma$ and $Z \gamma$ modes. However, this correlation does not extend to the lighter 95 GeV Higgs.

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Abdesslam Arhrib, Khiem Hong Phan, Van Que Tran, Tzu-Chiang Yuan. 2024-05-06. When The Standard Model Higgs Meets Its Lighter 95 GeV Twin. https://doi.org/10.1016/j.nuclphysb.2025.116909

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