SoftKiller, a particle-level pileup removal method
High Energy Physics - Phenomenology
2016-10-14 v2 High Energy Physics - Experiment
Abstract
Existing widely-used pileup removal approaches correct the momenta of individual jets. In this article we introduce an event-level, particle-based pileup correction procedure, SoftKiller. It removes the softest particles in an event, up to a transverse momentum threshold that is determined dynamically on an event-by-event basis. In simulations, this simple procedure appears to be reasonably robust and brings superior jet resolution performance compared to existing jet-based approaches. It is also nearly two orders of magnitude faster than methods based on jet areas.
Cite
@article{arxiv.1407.0408,
title = {SoftKiller, a particle-level pileup removal method},
author = {Matteo Cacciari and Gavin P. Salam and Gregory Soyez},
journal= {arXiv preprint arXiv:1407.0408},
year = {2016}
}
Comments
26 pages, 16 figures (2 appendices with further checks added)