The ATLAS collaboration;
(2023)
Measurements of multijet event isotropies using optimal transport with the ATLAS detector.
The Journal of High Energy Physics
, 2023
, Article 60. 10.1007/JHEP10(2023)060.
Preview |
Text
JHEP10(2023)060.pdf - Published Version Download (2MB) | Preview |
Abstract
A measurement of novel event shapes quantifying the isotropy of collider events is performed in 140 fb−1 of proton-proton collisions with √s = 13 TeV centre-of-mass energy recorded with the ATLAS detector at CERN’s Large Hadron Collider. These event shapes are defined as the Wasserstein distance between collider events and isotropic reference geometries. This distance is evaluated by solving optimal transport problems, using the ‘Energy-Mover’s Distance’. Isotropic references with cylindrical and circular symmetries are studied, to probe the symmetries of interest at hadron colliders. The novel event-shape observables defined in this way are infrared- and collinear-safe, have improved dynamic range and have greater sensitivity to isotropic radiation patterns than other event shapes. The measured event-shape variables are corrected for detector effects, and presented in inclusive bins of jet multiplicity and the scalar sum of the two leading jets’ transverse momenta. The measured distributions are provided as inputs to future Monte Carlo tuning campaigns and other studies probing fundamental properties of QCD and the production of hadronic final states up to the TeV-scale.
| Type: | Article |
|---|---|
| Title: | Measurements of multijet event isotropies using optimal transport with the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP10(2023)060 |
| Publisher version: | https://doi.org/10.1007/JHEP10(2023)060 |
| Language: | English |
| Additional information: | This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) (http://creativecommons.org/licenses/by/4.0/), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. |
| Keywords: | Hadron-Hadron Scattering, Jet Physics, Jets |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10179867 |
Archive Staff Only
 |
View Item |
