DNN-based identification of additional b jets for a differential ttbb cross section measurement

2024/01/15 by Juhee Song, Song, Juhee
Medicine · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Medical Imaging Techniques and Applications #Particle Detector Development and Performance #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.2401.07626

openalex publication_date 2024/01/15 · openalex created_date 2024/01/18 · openalex updated_date 2026/07/28

Abstract

In differential measurements of the ttbb process, observables related to the b jets not originating from top quark decays are of special interest to probe the multi-scale QCD nature of the ttbb process, and the description of the additional b jet radiation via different simulation tools. In order to access these additional b jets, identification algorithms have to be applied to determine which of the b jets recorded in the detector are the b jets of interest. This is achieved via a DNN-based method which will be highlighted in this article.

Related

• Improved b quark jet identification at the D0 experiment
• Learning to increase matching efficiency in identifying additional b-jets in the ttbb process
• Differential tt Cross Section Measurements as a Function of Variables other than Kinematics
• B-Tagging at CDF and DO, Lessons for LHC
• Modelling uncertainties and prompt b-jet identification in ttbb production with dilepton signatures at the LHC