15th International Workshop on Boosted Object Phenomenology, Reconstruction, Measurements, and Searches at Colliders

Session

Performance

31 Jul 2023, 12:40

Auditorium (50)

Conveners

Performance

• Peter Loch
• Salvatore Rappoccio

127. Jet performance and pileup mitigation in Run3 in CMS

Steffen Albrecht

31/07/2023, 12:40

Every bunch crossing at the LHC causes not just one proton-proton interaction, but several. These additional collisions are called "pileup". With the increasing luminosity of the LHC also the number of pileup interactions per bunch crossing increased in the past years and it will reach up to 140 during high-luminosity LHC operation. Removing the pileup from an event is essential, because it...

90. New techniques for reconstructing and calibrating hadronic objects with ATLAS

Margherita Spalla

31/07/2023, 13:00

Experimental uncertainties related to hadronic object reconstruction can limit the precision of physics analyses at the LHC, and so improvements in performance have the potential to broadly increase the impact of results. Recent refinements to reconstruction and calibration procedures for ATLAS jets and MET result in reduced uncertainties, improved pileup stability and other performance gains....

130. Boosted Jet Tagging and Calibration in CMS 13 TeV Data

Oz Amram (Fermilab)

31/07/2023, 13:20

We will overview the usage of boosted jet taggers within CMS. We will also discuss how their performance is calibrated for usage in analyses. This includes a new Lund Plane reweighting technique that can calibrate the performance of high-prong jets for which there is no standard model equivalent which can be used as a proxy.

87. Classifying hadronic objects in ATLAS with ML/AI algorithms

Jad Sardain

31/07/2023, 13:40

Hadronic object reconstruction is one of the most promising settings for cutting-edge machine learning and artificial intelligence algorithms at the LHC. In this contribution, highlights of ML/AI applications by ATLAS to particle and boosted-object identification, MET reconstruction and other tasks will be presented.

129. Performance of heavy flavour jet identification in boosted topologies in CMS 13 TeV data

Congqiao Li (Peking University)

31/07/2023, 14:00

Physics measurements in the highly Lorentz-boosted regime are a critical part of the LHC physics program. In the CMS Collaboration, various boosted-jet tagging algorithms, designed to identify hadronic jets originating from the decay of a massive particle to bb̅ or cc̅, have been developed and deployed in a variety of analyses. This talk summarises the performance of these algorithms with...