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Measurement of the $t\bar{t}$ production cross section in the $τ$ + jets final state in $pp$ collisions at $\sqrt{s}=8$ TeV using the ATLAS detector

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Bibliographical note

37 pages in total, author list starts at page 21, 2 figures, 6 tables, published version, all figures and tables including auxiliary figures are available at


  • 1702.08839v2

    1702.08839v2.pdf, 519 KB, application/pdf

    Uploaded date:04 Mar 2019

King's Authors


A measurement of the inclusive $pp\to t\bar{t}+X$ production cross section in the $\tau+{\rm jets}$ final state using only the hadronic decays of the $\tau$ lepton is presented. The measurement is performed using 20.2 fb$^{-1}$ of proton-proton collision data recorded at a center-of-mass energy of $\sqrt{s}=8$ TeV with the ATLAS detector at the Large Hadron Collider. The cross section is measured via a counting experiment by imposing a set of selection criteria on the identification and kinematic variables of the reconstructed particles and jets, and on event kinematic variables and characteristics. The production cross section is measured to be $\sigma_{t\bar{t}}= 239 \pm 29$ pb, which is in agreement with the measurements in other final states and the theoretical predictions at this center-of-mass energy.

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