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arXiv · 1407.0408

SoftKiller, a particle-level pileup removal method

Matteo Cacciari·Gavin P. Salam·Gregory Soyez
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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.

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Matteo Cacciari, Gavin P. Salam, Gregory Soyez. 2014-07-01. SoftKiller, a particle-level pileup removal method. https://doi.org/10.1140/epjc/s10052-015-3267-2

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