SAIP2025

Monte Carlo generation involving searches for scalar resonances with diphoton in association with tau+ tau-/2 b-jets in ATLAS detector at the LHC

9 Jul 2025, 11:10

20m

Solomon Mahlangu House (University of the Witwatersrand, Johannesburg)

Oral Presentation Track B - Nuclear, Particle and Radiation Physics Nuclear, Particle and Radiation Physics-2

Speaker

Njokweni Mbuyiswa (University of the Witwatersrand)

Description

A Monte Carlo generation campaign has been submitted under the HBSM subgroup to study a simplified model featuring the resonant production of scalar particles at the electroweak scale. The process under consideration is $ gg \rightarrow H \rightarrow SS' $, where the scalar $ S $ (with a mass of approximately 150 GeV) decays to a diphoton final state $( \gamma\gamma )$, and the accompanying scalar $ S' $ (with a mass of approximately 95 GeV) decays to either $ b\bar{b} $ or $ \tau^+\tau^-$. The motivation for these studies is rooted in the persistent multi-lepton anomalies observed in various channels at the LHC, as highlighted in combined searches for scalar resonances by ATLAS and CMS and further explored in the context of electroweak-scale scalar states decaying to photons, leptons, or $b$-jets [arXiv:2109.02650, arXiv:2306.17209, arXiv:2503.16245].The MC production is designed for Run 3 conditions at a center-of-mass energy of $ \sqrt{s} = 13.6$ TeV and will facilitate detailed kinematic studies and optimization of selection strategies in these channels.