Speaker
Description
Higgs Boson is characterized by J$^\pi$ = 0$^+$ and fundamentally forms the cosmos by interacting with other particles to impart mass in standard model. This study is focused on Z$\gamma$ channel of Higgs with branching ratio of $\beta(H \rightarrow Z\gamma) = (1.57 \pm 0.09) \times 10^{-3}$. Feynman diagram for Z$\gamma$ channel is similar to $\gamma$$\gamma$ channel, and loop diagrams in this process are particularly sensitive to BSM physics. Analysis $H\rightarrow Z\gamma\rightarrow \mu^+\mu^-\gamma$ or $e^+ e^-\gamma$ done using collision data generated from proton-proton interactions using PYTHIA-8 at $\sqrt{s}$ = 13 TeV. Detection of heavy resonance signals in heavy-ion physics is challenging due to complex background noise and pile-up in dense media also current Higgs detection methods are sub-optimal. This study addresses these issues by applying an angular correlation approach and will help in enhancing Higgs signal-to-background ratio in both heavy-ion and proton-proton experiments. Higgs mass is reconstructed by employing selection criteria focused on certain kinematic variables at various stages and signal-to-background ratio computed. Further analysis involves examining relation between $P_{Z}$ vs $\theta_{\ell^+\ell^-}$ and $P_{H}$ vs $\theta_{Z\gamma}$ - refers to $1^{st}$ and $2^{nd}$ angular correlation respectively. Both up to 1$\sigma$ were applied which enhanced the signal-to-background ratio up to several orders of magnitude. Similar approach have been applied to complex decays of the particle to enhance signal-to-background ratio. Studies on acceptance and efficiency have also been conducted to integrate them into the cross-section calculation.
| Field of contribution | Experiment |
|---|
