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Scientific article
Open access
English

Performance of pile-up mitigation techniques for jets in pp collisions at √s = 8 TeV using the ATLAS detector

ContributorsATLAS Collaboration
Published inEuropean physical journal. C, Particles and fields, vol. 76, no. 11, 581
Collection
  • Open Access - SCOAP3
Publication date2016
Abstract

The large rate of multiple simultaneous proton–proton interactions, or pile-up, generated by the Large Hadron Collider in Run 1 required the development of many new techniques to mitigate the adverse effects of these conditions. This paper describes the methods employed in the ATLAS experiment to correct for the impact of pile-up on jet energy and jet shapes, and for the presence of spurious additional jets, with a primary focus on the large 20.3 fb-1 data sample collected at a centre-of-mass energy of s=8TeV . The energy correction techniques that incorporate sophisticated estimates of the average pile-up energy density and tracking information are presented. Jet-to-vertex association techniques are discussed and projections of performance for the future are considered. Lastly, the extension of these techniques to mitigate the effect of pile-up on jet shapes using subtraction and grooming procedures is presented.

Citation (ISO format)
ATLAS Collaboration. Performance of pile-up mitigation techniques for jets in pp collisions at √s = 8 TeV using the ATLAS detector. In: European physical journal. C, Particles and fields, 2016, vol. 76, n° 11, p. 581. doi: 10.1140/epjc/s10052-016-4395-z
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Article (Published version)
Identifiers
ISSN of the journal1434-6044
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