Measurements of top-quark pair differential and double-differential cross-sections in the ℓ +jets channel with pp collisions at √s=13 TeV using the ATLAS detector

Summary, in English

Single- and double-differential cross-section measurements are presented for the production of top-quark pairs, in the lepton + jets channel at particle and parton level. Two topologies, resolved and boosted, are considered and the results are presented as a function of several kinematic variables characterising the top and tt¯ system and jet multiplicities. The study was performed using data from pp collisions at centre-of-mass energy of 13 TeV collected in 2015 and 2016 by the ATLAS detector at the CERN Large Hadron Collider (LHC), corresponding to an integrated luminosity of 36fb-1. Due to the large tt¯ cross-section at the LHC, such measurements allow a detailed study of the properties of top-quark production and decay, enabling precision tests of several Monte Carlo generators and fixed-order Standard Model predictions. Overall, there is good agreement between the theoretical predictions and the data. © 2019, CERN for the benefit of the ATLAS collaboration.

• Author: Aad G.; T. Åkesson; S. Bocchetta; L. Bryngemark; E. Corrigan; C. Doglioni; K. Gregersen; E. Hansen; V. Hedberg; G. Jarlskog; C. Kalderon; E. Kellermann; B. Konya; E. Lytken; K. Mankinen; C. Marcon; J. Mjörnmark; G. Mullier; R. Poettgen; T. Poulsen; E. Skorda; O. Smirnova; Zwalinski L.
• Department/s: Particle and nuclear physics; eSSENCE: The e-Science Collaboration
• Publishing year: 2019
• Language: English
• Publication/Series: European Physical Journal C
• Volume: 79
• Issue: 12
• Links: http://dx.doi.org/10.1140/epjc/s10052-019-7525-6
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6044