Speaker
Description
The search for new physics beyond the Standard Model (BSM) continues to be a central pursuit in contemporary particle physics, driving the exploration of new particles and interactions. In this talk, we present the results from a comprehensive search for BSM particles in ‘high-mass diphoton events’, a distinctive signature predicted by several SM extensions, including Supersymmetry, extra spatial dimensions, and non-minimal Higgs sectors.
We investigate both spin-0 and spin-2 particles in resonant as well as non-resonant scenarios, leveraging the datasets of proton-proton collisions at √s = 13/13.6 TeV from LHC Run II/III, recorded by the CMS detector. Constraints are placed on the production of heavy Higgs bosons and the continuum clockwork mechanism. Notably, we establish the most stringent limits to date on models with ADD extra dimensions and RS gravitons, excluding coupling parameters greater than 0.1.
This presentation will highlight salient results from Run II, while also outlining the ongoing efforts using the latest Run III data. We will discuss the analysis methodology, with particular emphasis on the complementary approaches used to model signals/backgrounds, and the use of advanced multivariate techniques to enhance photon identification, etc. These strategies have significantly increased the sensitivity to potential BSM signals, paving the way for future advancements.
| Field of contribution | Experiment |
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