Speaker
Description
We present a comprehensive analysis of the Two Higgs Doublet Model with a Singlet (2HDM+S) at future $e^{+} e^{-}$ collider. We perform extensive parameter scans considering the $\chi^2$ analysis within the 2HDM+S framework, exploring a range of model-independent parameters to identify regions that could provide improved branching, for channels, $S \rightarrow \gamma \gamma$, $S \rightarrow W^{+} W^{-}$,\; $S \rightarrow \tau^+ \tau^-$ for $m_S \approx [95-96]$ GeV at $\sqrt{s} = 250\; \& \;200$ GeV. In particular, we provide a precise mass reconstruction measurement for the scalar, $m_S$, using the recoil mass method through $e^{+} e^{-} \rightarrow ZS$ where $Z \rightarrow \mu^{+} \mu^{-}$ and $S \rightarrow b \overline{b}$. Furthermore, we employ Deep Neural Network (DNN) to provide enhanced resolution for the separation between Beyond Standard Model (BSM) signal and SM background in the region $95-96$ GeV.
