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2014

On the use of charged-track information to subtract neutral pileup

Cacciari, Matteo, Salam, Gavin P., Soyez, Gregory

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The use of charged pileup tracks in a jet to predict the neutral pileup component in that same jet could potentially lead to improved pileup removal techniques, provided there is a strong local correlation between charged and neutral pileup.

In Monte Carlo simulation we find that the correlation is however moderate, a feature that we attribute to characteristics of the underlying non-perturbative dynamics.
Consequently, `neutral-proportional-to-charge' (NpC) pileup mitigation approaches do not outperform existing, area-based, pileup removal methods.
This finding contrasts with the arguments made in favour of a new method, "jet cleansing", in part based on the NpC approach.

On the use of charged-track information to subtract neutral pileup · Around

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