Contribution
Exploring Higgs-like Resonant Signals within a 2HDM Framework
Speakers
- Prof. Yithsbey GIRALDO
Primary authors
- Prof. Yithsbey GIRALDO (Universidad de Nariño)
Co-authors
- Prof. Eduardo ROJAS PEÑA (Universidad de Nariño)
- Dr. Richard BENAVIDES (Instituto Tecnológico Metropolitano, ITM)
- Dr. William A. PONCE (Universidad de Antioquia)
- Mr. Oscar RODRÍGUEZ (Universidad de San Buenaventura)
Content
In this work, we analyze Higgs-like resonant signals and recent anomalies observed in high-mass scalar resonance searches at the LHC. We identify a Two-Higgs-Doublet Model (2HDM) as a natural extension of the Standard Model to partially explain these observations, along with the inclusion of a scalar singlet. The Higgs mechanism in our model requires at least two CP-odd bosons and one charged scalar boson, leaving three CP-even scalar bosons, one CP-odd scalar boson, and one charged scalar. We focus on determining the typical masses for these bosons and comparing them with experimental anomalies. Among the anomalies, we find a light neutral scalar with a mass around 95 GeV and a charged Higgs near 130 GeV. Additionally, we analyze new scalar resonances decaying into two photons with masses of approximately 95 GeV and 152 GeV, as well as excesses in diboson events at 680 GeV reported by CMS. We consider two possible charge assignments for the scalar singlet, leading to different cubic or quartic couplings between the scalar fields. By exploring the scalar potential and varying the model's free parameters, we align the masses of the scalar fields with observed experimental anomalies. Notably, we associate the lightest CP-even Higgs scalar with the 95 GeV anomaly and confirm that the 130 GeV charged Higgs mass fits well within our model’s predictions. Our figures illustrate that many of these experimental anomalies coincide with regions of high solution density, supporting our theoretical framework.
Summary
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