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

G. Aad, B. Abbott, D. C. Abbott, A. Abed Abud, K. Abeling, D. K. Abhayasinghe, S. H. Abidi, O. S. AbouZeid, N. L. Abraham, H. Abramowicz, H. Abreu, Y. Abulaiti (+2941 others)
2019 European Physical Journal C: Particles and Fields  
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
more » ... e ATLAS detector at the CERN Large Hadron Collider (LHC), corresponding to an integrated luminosity of 36 fb −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.
doi:10.1140/epjc/s10052-019-7525-6 fatcat:gryqkfcdsnawtjjcyomhrgs3gy