18th International Workshop on Boosted Object Phenomenology, Reconstruction, Measurements, and Searches at Colliders

Session

Large-radius jet calibration and regression

Jul 14, 2026, 10:50 AM

10. Calibration and uncertainties of large-radius jets with ATLAS LHC Run2 data

Yicong Huang (Charles University (CZ))

7/14/26, 10:50 AM

Talk

Large radius jets are useful objects to describe massive resonances produced with a high boost which decay fully hadronically. During the Run~2 run of the LHC, the ATLAS experiment developed a new algorithm to define large-radius jets, clustering Unified Flow Objects (UFO) constituents and applying the constituent subtraction (CS), soft killer (SK) and soft drop (SD) techniques. In this paper,...

6. Transformer models for kinematic regression of R=0.4 and R=1.0 bottom-quark jets in ATLAS

Snigdho Chakraborty (University of Warwick (GB))

7/14/26, 11:10 AM

Talk

Decays of the Higgs and Z bosons to bottom quarks are essential for measurements of the bottom quark Yukawa coupling, the Higgs self-coupling, and production modes in highly boosted phase spaces. In ATLAS, these decay products are reconstructed as jets using a clustering radius parameter of R=0.4 and R=1.0 for resolved and boosted decays, respectively. Improvements in flavour tagging, which...