Pileup and Infrared Radiation Annihilation (PIRANHA): a paradigm for continuous jet grooming
Name
13130_2023_Article_21837.pdf
Size
1.95 MB
Format
Adobe PDF
Checksum (MD5)
d719ba3cd56edc361c6e89da3dfc0d2f
Author(s)
Alipour-fard, Samuel
Komiske, Patrick T.
Metodiev, Eric M.
Thaler, Jesse
Date Issued
September 22, 2023
Publisher
Springer Berlin Heidelberg
Citation
Journal of High Energy Physics. 2023 Sep 22;2023(9):157
Version
Final published version
Abstract
Abstract
Jet grooming is an important strategy for analyzing relativistic particle collisions in the presence of contaminating radiation. Most jet grooming techniques introduce hard cutoffs to remove soft radiation, leading to discontinuous behavior and associated experimental and theoretical challenges. In this paper, we introduce Pileup and Infrared Radiation Annihilation (Piranha), a paradigm for continuous jet grooming that overcomes the discontinuity and infrared sensitivity of hard-cutoff grooming procedures. We motivate Piranha from the perspective of optimal transport and the Energy Mover’s Distance and review Apollonius Subtraction and Iterated Voronoi Subtraction as examples of Piranha-style grooming. We then introduce a new tree-based implementation of Piranha, Recursive Subtraction, with reduced computational costs. Finally, we demonstrate the performance of Recursive Subtraction in mitigating sensitivity to soft distortions from hadronization and detector effects, and additive contamination from pileup and the underlying event.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP09(2023)157
