Measurements of inclusive and differential fiducial cross-sections of 𝑡𝑡 production with additional heavy-flavour jets in proton-proton collisions at √𝑠 = 13 TeV with the ATLAS detector
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Issue Date
2019-04-04Author
Aaboud, M.
Rogan, Christopher
The ATLAS collaboration
Publisher
Springer Verlag
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
Copyright CERN, for the benefit of the ATLAS Collaboration.
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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 𝑡𝑡𝑏𝑏 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.
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This work is licensed under a Creative Commons Attribution 4.0 International License.
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Citation
The ATLAS collaboration., Aaboud, M., Aad, G. et al. Measurements of inclusive and differential fiducial cross-sections of 𝑡𝑡 production with additional heavy-flavour jets in proton-proton collisions at √𝑠 = 13 TeV with the ATLAS detector. J. High Energ. Phys. 2019, 46 (2019). https://doi.org/10.1007/JHEP04(2019)046
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