Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 75, Issue 2, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-015-3267-2
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Funding
- ERC advanced grant Higgs@LHC
- French Agence Nationale de la Recherche [ANR-10-CEXC-009-01]
- EU ITN grant LHCPhenoNet [PITN-GA-2010-264564]
- ILP LABEX [ANR-10-LABX-63]
- ANR within the Investissements d'Avenir programme [ANR-11-IDEX-0004-02]
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Existing widely used pileup removal approaches correct themomenta 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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