Measurement of jet track functions in pp collisions at √s=13 TeV with the ATLAS detector
- NázevTitle
- Measurement of jet track functions in pp collisions at √s=13 TeV with the ATLAS detectorMeasurement of jet track functions in pp collisions at √s=13 TeV with the ATLAS detector
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- G. Aad, E. Aakvaag, B. Abbott, S. Abdelhameed, B. Ali, K. Augsten, B. Bergmann, H. Day-Hall, P. Fiedler, Z. Hubáček, S. Mondal, M. Myška, L. Novotný, V. Petousis, S. Pospíšil, K. Smolek, A. Sopczak, V. Vacek, P. Vokáč, O. Zaplatílek
- DOIDOI
- 10.1016/j.physletb.2025.139680
- Časopis / citaceJournal / citation
- Physics Letters B. 2025, 868 ISSN 1873-2445.
- RokYear
- 2025
- JazykLanguage
- eng
- WoSWoS
- 001552750200001
- ScopusScopus
- 2-s2.0-105010226419
- RIVRIV
- RIV/68407700:21220/25:00386953!RIV26-MSM-21220___
- ProjektProject
- Jetová fyzika v experimentu ATLAS na urychlovači LHCJet physics in the ATLAS experiment at the LHC collider
AbstraktAbstract
Measurements of jet substructure are key to probing the energy frontier at colliders, and many of them use track-based observables which take advantage of the angular precision of tracking detectors. Theoretical calculations of track-based observables require 'track functions', which characterize the transverse momentum fraction r(q) carried by charged hadrons from a fragmenting quark or gluon. This letter presents a direct measurement of r(q) distributions in dijet events from the 140 fb(-1) of proton-proton collisions at root s = 13 TeV recorded with the ATLAS detector. The data are corrected for detector effects using machine-learning methods. The scale evolution of the moments of the r(q) distribution is sensitive to non-linear renormalization group evolution equations of QCD, and is compared with analytic predictions. When incorporated into future theoretical calculations, these results will enable a precision program of theory-data comparison for track-based jet substructure observables.
Measurements of jet substructure are key to probing the energy frontier at colliders, and many of them use track-based observables which take advantage of the angular precision of tracking detectors. Theoretical calculations of track-based observables require 'track functions', which characterize the transverse momentum fraction r(q) carried by charged hadrons from a fragmenting quark or gluon. This letter presents a direct measurement of r(q) distributions in dijet events from the 140 fb(-1) of proton-proton collisions at root s = 13 TeV recorded with the ATLAS detector. The data are corrected for detector effects using machine-learning methods. The scale evolution of the moments of the r(q) distribution is sensitive to non-linear renormalization group evolution equations of QCD, and is compared with analytic predictions. When incorporated into future theoretical calculations, these results will enable a precision program of theory-data comparison for track-based jet substructure observables.