Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector

Alexander Oh, G Aad, Un-Ki Yang, Andrew Pilkington, Frederick Loebinger, Brian Cox, John Almond, Cinzia Da Via, Christian Schwanenberger

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Jet cross sections have been measured for the first time in proton-proton collisions at a centre-of-mass energy of 7 TeV using the ATLAS detector. The measurement uses an integrated luminosity of 17 nb(-1) recorded at the Large Hadron Collider. The anti-k(t) algorithm is used to identify jets, with two jet resolution parameters, R = 0.4 and 0.6. The dominant uncertainty comes from the jet energy scale, which is determined to within 7% for central jets above 60 GeV transverse momentum. Inclusive single-jet differential cross sections are presented as functions of jet transverse momentum and rapidity. Dijet cross sections are presented as functions of dijet mass and the angular variable chi. The results are compared to expectations based on next-to-leading-order QCD, which agree with the data, providing a validation of the theory in a new kinematic regime
    Original languageEnglish
    JournalEuropean Physical Journal C
    VolumeC71
    Issue number2
    DOIs
    Publication statusPublished - 2011

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