TY - JOUR
T1 - A continuous calibration of the ATLAS flavour-tagging classifiers via optimal transportation maps
AU - Zwalinski, L.
AU - Zou, W.
AU - Zormpa, O.
AU - Zorbas, T. G.
AU - Kabana, S.
AU - ATLAS Collaboration
N1 - Publisher Copyright:
© CERN for the benefit of the ATLAS Collaboration 2025.
PY - 2025/11
Y1 - 2025/11
N2 - A calibration of the ATLAS flavour-tagging algorithms using a new calibration procedure based on optimal transportation maps is presented. Simultaneous, continuous corrections to the b-jet, c-jet, and light-flavour jet classification probabilities from jet-tagging algorithms in simulation are derived for b-jets using tt¯→eμννbb data. After application of the derived calibration maps, closure between simulation and observation is achieved for jet flavour observables used in ATLAS analyses of Large Hadron Collider (LHC) Run 2 proton-proton collision data. This continuous calibration opens up new possibilities for the future use of jet flavour information in LHC analyses and also serves as a guide for deriving high-dimensional corrections to simulation via transportation maps, an important development for a broad range of inference tasks.
AB - A calibration of the ATLAS flavour-tagging algorithms using a new calibration procedure based on optimal transportation maps is presented. Simultaneous, continuous corrections to the b-jet, c-jet, and light-flavour jet classification probabilities from jet-tagging algorithms in simulation are derived for b-jets using tt¯→eμννbb data. After application of the derived calibration maps, closure between simulation and observation is achieved for jet flavour observables used in ATLAS analyses of Large Hadron Collider (LHC) Run 2 proton-proton collision data. This continuous calibration opens up new possibilities for the future use of jet flavour information in LHC analyses and also serves as a guide for deriving high-dimensional corrections to simulation via transportation maps, an important development for a broad range of inference tasks.
UR - https://www.scopus.com/pages/publications/105023226792
U2 - 10.1140/epjc/s10052-025-14682-0
DO - 10.1140/epjc/s10052-025-14682-0
M3 - Article
AN - SCOPUS:105023226792
SN - 1434-6044
VL - 85
JO - European Physical Journal C
JF - European Physical Journal C
IS - 11
M1 - 1272
ER -