Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 34: Top-Quarks: Eigenschaften I

T 34.2: Talk

Tuesday, March 20, 2018, 16:45–17:00, Z6 - SR 1.002

Measurement of the ttγγ production cross-section in pp collisions at √s=13 TeV with the ATLAS detector — Ivor Fleck, •Nomin-Erdene Erdenebat, and Yichen Li — University of Siegen, Germany

This analysis of the production of a top-quark pair in association with two photons has been done with data collected during 2015 and 2016 corresponding to an integrated luminosity of 36.1 fb⁻¹ at a center-of-mass of energy of √s=13 TeV, in the single lepton channels. In the single lepton channels, one lepton and at least four jets are requested, with at least one jet being b-tagged and two isolated photons with p_T > 20 GeV and |η| < 2.37. The event yields and the kinematic distributions are compared between data and MC.