Speaker
Description
Recent studies (arXiv:2109.02650, 2306.17209, 2503.16245) have identified growing excesses in scalar resonances with di-photon at the Large Hadron Collider (LHC), suggesting the presence of scalar particles beyond the Standard Model. These scalar resonances are motivated by the multi-lepton anomalies at the LHC which indicate a potential new scalar particle $S$ with a mass of approximately $151.5~\mathrm{GeV}$, originating from a heavier scalar $H$ with a mass near $270~\mathrm{GeV}$, with a global significance of $\sim 5\sigma$. Motivated by these findings, the HBSM group within the HMBS physics group at ATLAS has launched a new analysis using the easyjet analysis framework. This analysis focuses on searching for scalar resonances through di-photon production in the process $g g \to H \to S S'$, where $S \to \gamma\gamma$ and $S'$ decays to $S' \to \tau_h \tau_\ell$. We are preparing to use the analysis tools to analyse the 2022-2024 Run~3 data with an integrated luminosity of $183~\mathrm{fb}^{-1}$ at $\sqrt{s} = 13.6~\mathrm{TeV}$
| Apply for student award at which level: | MSc |
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| Consent on use of personal information: Abstract Submission | Yes, I ACCEPT |
