Abstract

Measurements of inclusive and differential top quark production cross sections in hadronic final states, including hadronic τ decays, in proton-proton collisions with the ATLAS detector at the Large Hadron Collider are presented at center-of-mass energies of 7, 8 and 13 TeV. The inclusive cross section measurements reach high precision and are compared to other decay modes and the best available theoretical calculations. Differential measurements of the kinematic properties of top quark events are also discussed. These measurements use boosted top quarks, probing our understanding of top quark production in the TeV regime.

Highlights

  • The top quark was discovered by both the CDF [1] and D∅ [2] collaborations in 1995 at the Tevatron collider

  • Some of the rece√nt results achieved by the ATLAS collaboration [4], using data collected at a center-of-mass energy ( s) of 7, 8 and 13 TeV are here presented

  • High precision measurements of top quark inclusive and differential cross sections have been performed by the ATLAS experiment at 7, 8 and 13 TeV

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Summary

Introduction

The top quark was discovered by both the CDF [1] and D∅ [2] collaborations in 1995 at the Tevatron collider It is the most massive elementary particle known (mt = 173.34 ± 0.27 (stat.) ± 0.71 (syst.) GeV [3]) and due to its very short lifetime, the top quark decays before hadronizing. This allows to experimentally test the properties of a bare quark. A more complete list of results is available at the ATLAS public top quark results website [5]

Top quark pair production and decay
Background template
Findings
Conclusions
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