https://doi.org/10.1140/epjc/s10052-024-13247-x
Regular Article - Theoretical Physics
Higgs photon associated production in a two Higgs doublet type-II seesaw model at future electron-positron colliders
LPHEA, Faculty of Science Semlalia, Cadi Ayyad University, P.O.B. 2390, Marrakech, Morocco
Received:
17
March
2024
Accepted:
16
August
2024
Published online:
2
September
2024
We study the one-loop prediction for the single production of a SM-like Higgs boson in association with a photon in electron-positron collisions in the context of the two Higgs doublet type-II seesaw model (2HDMcT). We explore to what extent the new scalars in the 2HDMcT spectrum affect its production cross-section, the ratio as well as the signal strengths and when is identified with the observed SM Higgs boson within the 2HDMcT delimited parameter space. More specifically, we focus on process at one-loop, and analyzed how it evolves under a full set of theoretical constraints and the available experimental data, including limit at 95 C.L. Our analysis shows that these observables are strongly dependent on the parameters of the model, especially the mixing angel , the potential parameters , , the trilinear Higgs couplings, with a noticeable sensitivity to . We found that can significantly be enhanced up to fb, thus exceeding the Standard Model prediction. Additionally, as a byproduct, we also observed that is entirely correlated with both the and signal strengths.
© The Author(s) 2024
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