Speaker
Description
This talk presents a comprehensive overview of recent measurements of the mass and substructure of boosted top quarks and W bosons using full Run 2 data from ATLAS and CMS. Particular emphasis is placed on the extraction of the top quark mass in highly collimated topologies, contrasting precision determinations from ATLAS with advanced reclustering strategies used by CMS, such as the use of XCone to enhance reconstruction quality. The presentation also summarizes recent progress toward precision measurements of the W boson mass in all-hadronic final states, where the soft-drop algorithm is applied to mitigate pileup and radiation effects. Beyond mass extractions, it highlights detailed evaluations of jet substructure, including simultaneous measurements of N-subjettiness observables across light-flavour quark, gluon, W boson, and top quark jets. These studies are complemented by in-depth analyses of top jet substructure and the latest characterizations of hadronic emissions using the Lund jet plane. Collectively, these results showcase the ongoing refinement of algorithmic techniques and observables that are essential for advancing precision SM measurements at the LHC.