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

Abstract : 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.
Type de document :
Article dans une revue
Physical Review D, American Physical Society, 2017, 95, pp.072003. 〈https://journals.aps.org/prd/abstract/10.1103/PhysRevD.95.072003〉. 〈10.1103/PhysRevD.95.072003〉

http://hal.in2p3.fr/in2p3-01480132
Contributeur : Claudine Bombar <>
Soumis le : mercredi 1 mars 2017 - 10:35:59
Dernière modification le : jeudi 18 janvier 2018 - 01:49:09

### Citation

M. Aaboud, N. Berger, A.M. Burger, M. Delmastro, L. Di Ciaccio, et al.. Measurement of the $t\bar{t}$ production cross section in the $\tau$ + jets final state in $pp$ collisions at $\sqrt{s}=8$ TeV using the ATLAS detector. Physical Review D, American Physical Society, 2017, 95, pp.072003. 〈https://journals.aps.org/prd/abstract/10.1103/PhysRevD.95.072003〉. 〈10.1103/PhysRevD.95.072003〉. 〈in2p3-01480132〉

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