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SoftKiller, a particle-level pileup removal method

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arxiv 1407.0408 v2 pith:AH34QH6W submitted 2014-07-01 hep-ph hep-ex

classification hep-phhep-ex
keywords pileupapproachesexistingprocedureremovalsoftkillerappearsareas
verification ladder T0 review T1 audit T2 compute T3 formal
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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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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. High-Dimensional Unfolding in Large Backgrounds

    hep-ph 2025-07 conditional novelty 6.0 of 10

    OmniFold-HI, an ML unfolding algorithm that handles large backgrounds and high-dimensional auxiliary observables, is derived, shown equivalent to iterative Bayesian unfolding, and demonstrated to improve jet-substruct...

  2. The calibration of large-radius jets using the Run 2 dataset with the ATLAS detector

    hep-ex 2026-07 conditional novelty 4.0 of 10

    Large-radius jets from Unified Flow Objects, groomed with soft drop, are calibrated against Monte Carlo and collision data, with in-situ-validated jet energy and mass scales at 1% (≤1 TeV) to 2–3% (≤2 TeV) precision.

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