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Searches for Anomalous Resonances in the Large Hadron Collider for New Physics

by Ying Wun Yvonne Ng

Institution: University of California
Department:
Degree:
Year: 2022
Keywords: Physics; Collider Physics; Elementary Particle Physics; Machine Learning; Statistics
Posted: 3/25/2025
Record ID: 2298231
Full text PDF: https://escholarship.org/uc/item/6q711957


Abstract

In this thesis a few approaches are explored to advance resonance finding searches in collider physics. Two analyses in the dimuon and dijet initial-state radiation(ISR)final state resonance are searched using proton-proton collisions at √s=13 TeV with an integrated luminosity of 139/fb, collected by the ATLAS experiment. No statistically significant excess is seen in the dijetISR search. In the dimuon search, a novel background estimation method is developed, in which the smooth but unknown background is estimated using a Gaussian process fit.

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