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2007

Pileup subtraction using jet areas

Cacciari, Matteo, Salam, Gavin P.

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One of the major challenges for the LHC will be to extract precise information from hadronic final states in the presence of the large number of additional soft pp collisions, pileup, that occur simultaneously with any hard interaction in high luminosity runs.

We propose a novel technique, based on jet areas, that provides jet-by-jet corrections for pileup and underlying-event effects.
It is data driven, does not depend on Monte Carlo modelling and can be used with any jet algorithm for which a jet area can be sensibly defined.
We illustrate its effectiveness for some key processes and find that it can be applied also in the context of the Tevatron, low-luminosity LHC and LHC heavy-ion collisions.

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G. Marchesini and B. R. Webber, Phys. Rev. D 38
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Y. L. Dokshitzer, G. D. Leder, S. Moretti and B. R. Webber, JHEP 9708
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T. Sjostrand et al
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Then

I. P. Lokhtin and A. M. Snigirev, Eur. Phys. J. C 45
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G. P. Salam and G. Soyez, JHEP 0705
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2007
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