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    Jet reconstruction and performance using particle flow with the ATLAS Detector

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    Author
    Aaboudd, M; Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Abeloos, B; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, H; ...
    Date
    2017-07-13
    Source Title
    European Physical Journal C: Particles and Fields
    Publisher
    SPRINGER
    University of Melbourne Author/s
    Nuti, Francesco; Barberio, Luigia; Kubota, Takashi; ZANZI, DANIELE; Taylor, Geoffrey; Urquijo, Phillip; Rados, Pere; Dawe, Edmund; Scutti, Federico; Ungaro, Francesca Consiglia; ...
    Affiliation
    School of Physics
    Metadata
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    Document Type
    Journal Article
    Citations
    Aaboudd, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Abidi, S. H., AbouZeid, O. S., Abraham, N. L., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adelman, J., Adersberger, M., Adye, T. ,... Zwalinski, L. (2017). Jet reconstruction and performance using particle flow with the ATLAS Detector. EUROPEAN PHYSICAL JOURNAL C, 77 (7), https://doi.org/10.1140/epjc/s10052-017-5031-2.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/256556
    DOI
    10.1140/epjc/s10052-017-5031-2
    Abstract
    This paper describes the implementation and performance of a particle flow algorithm applied to 20.2 fb[Formula: see text] of ATLAS data from 8 TeV proton-proton collisions in Run 1 of the LHC. The algorithm removes calorimeter energy deposits due to charged hadrons from consideration during jet reconstruction, instead using measurements of their momenta from the inner tracker. This improves the accuracy of the charged-hadron measurement, while retaining the calorimeter measurements of neutral-particle energies. The paper places emphasis on how this is achieved, while minimising double-counting of charged-hadron signals between the inner tracker and calorimeter. The performance of particle flow jets, formed from the ensemble of signals from the calorimeter and the inner tracker, is compared to that of jets reconstructed from calorimeter energy deposits alone, demonstrating improvements in resolution and pile-up stability.

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