Measurements of fiducial and differential cross-sections of tt¯ production with additional heavy-flavour jets in proton-proton collisions at s√ = 13 TeV with the ATLAS detector Aaboud, M. Aguilar Saavedra, Juan Antonio Atlas Collaboration Hadron-Hadron scattering (experiments) Heavy quark production This paper presents measurements of tt¯ production in association with additional b-jets in pp collisions at the LHC at a centre-of-mass energy of 13 TeV. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 36.1 fb−1. Fiducial cross-section measurements are performed in the dilepton and lepton-plus-jets tt¯ decay channels. Results are presented at particle level in the form of inclusive cross-sections of tt¯ final states with three and four b-jets as well as differential cross-sections as a function of global event properties and properties of b-jet pairs. The measured inclusive fiducial cross-sections generally exceed the tt¯bb¯ predictions from various next-to-leading-order matrix element calculations matched to a parton shower but are compatible within the total uncertainties. The experimental uncertainties are smaller than the uncertainties in the predictions. Comparisons of state-of-the-art theoretical predictions with the differential measurements are shown and good agreement with data is found for most of them. 2020-03-06T09:39:01Z 2020-03-06T09:39:01Z 2019 info:eu-repo/semantics/article Aaboud, M., Kupco, A., Webb, S., Dreyer, T., Wang, Y., Jakobs, K., ... & Schovancova, J. (2018). Measurements of fiducial and differential cross-sections of $ t\bar {t} $ production with additional heavy-flavour jets in proton-proton collisions at $\sqrt {s} $= 13 TeV with the ATLAS detector (No. CERN-EP-2018-276). http://hdl.handle.net/10481/60071 10.1007/JHEP04(2019)046 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España Springer Nature