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When The Standard Model Higgs Meets Its Lighter 95 GeV Twin

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arxiv 2405.03127 v2 pith:AARC3DUG submitted 2024-05-06 hep-ph

classification hep-ph
keywords higgsgammalightermodelcorrelationexcessesg2hdmparameter
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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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  1. Light Scalars in the Extended Georgi-Machacek Model

    hep-ph 2025-06 conditional novelty 6.0 of 10

    A global fit of the Georgi-Machacek and extended Georgi-Machacek models finds that the 95 GeV diphoton and bottom-quark excesses are compatible with the 125 GeV Higgs data, while the ditau excess is not, and it sets u...

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