Probing heavy charged Higgs bosons at gamma-gamma colliders using a multivariate technique*

Abstract This study explores the production of charged Higgs particles through photon-photon collisions within the context of the Two Higgs Doublet Model, including one-loop-level scattering amplitudes of electroweak and QED radiation. The cross-section has been scanned for the plane ( ) to investigate the process of . Three particular numerical scenarios, i.e ., low- , non-alignment, and short-cascade are employed. The decay channels for charged Higgs particles are examined using for low- and for non-alignment and short-cascade scenarios incorporating the new experimental and theoretical constraints along with the analysis for cross-sections. We find that, at a low energy, the cross-section is consistently higher for all scenarios. However, as increases, it reaches a peak value at 1 TeV for all benchmark scenarios. The branching ratio of the decay channels indicates that for non-alignment, the mode of decay takes control, and for a short cascade, the prominent decay mode remains , whereas in the low- scenario, the dominant decay channel is of . In our research, we employ contemporary machine-learning methodologies to investigate the production of high-energy Higgs bosons within a 3.0 TeV collider. We have used multivariate approaches such as Boosted Decision Trees (BDT), LikelihoodD, and Multilayer Perceptron (MLP) to show the observability of heavy-charged Higgs Bosons versus the most significant Standard Model backgrounds. The purity of the signal efficiency and background rejection are measured for each cut value.