Publications by Gavin Salam


SoftKiller, a particle-level pileup removal method.

The European physical journal. C, Particles and fields 75 (2015) 59-

M Cacciari, GP Salam, G Soyez

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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