Inclusive and differential cross-sections for dilepton t(t)over-bar production measured in root s=13 TeV pp collisions with the ATLAS detector

Inclusive and differential cross-sections for dilepton t(t)over-bar production measured in root ˆšs=13 TeV pp collisions with the ATLAS detector

For complete list of authors see http://dx.doi.org/10.1007/JHEP07(2023)141
Differential and double-differential distributions of kinematic variables of leptons from decays of top-quark pairs (t (t) over bar) are measured using the full LHC Run 2 data sample collected with the ATLAS detector. The data were collected at a pp collision energy of root s = 13TeV and correspond to an integrated luminosity of 140 fb(-1). The measurements use events containing an oppositely charged e mu pair and b-tagged jets. The results are compared with predictions from several Monte Carlo generators. While no prediction is found to be consistent with all distributions, a better agreement with measurements of the lepton p(T) distributions is obtained by reweighting the t (t) over bar sample so as to reproduce the top-quark p(T) distribution from an NNLO calculation. The inclusive top-quark pair production cross-section is measured as well, both in a fiducial region and in the full phase-space. The total inclusive cross-section is found to be sigma(t (t) over bar) = 829 +/- 1 (stat) +/- 13 (syst) +/- 8 (lumi) +/- 2 (beam) pb, where the uncertainties are due to statistics, systematic effects, the integrated luminosity and the beam energy. This is in excellent agreement with the theoretical expectation.

Bergeås Kuutmann, Elin,1980-Uppsala universitet,Högenergifysik(Swepub:uu)elibe340 (author)
Brenner, RichardUppsala universitet,Högenergifysik(Swepub:uu)richbren (author)
Dimitriadi, ChristinaUppsala universitet,Högenergifysik,Uppsala Univ, Dept Phys & Astron, Uppsala, Sweden(Swepub:uu)chrdi726 (author)
Ekelöf, TordUppsala universitet,Högenergifysik(Swepub:uu)tordeke (author)
Ellajosyula, VenugopalUppsala universitet,Högenergifysik(Swepub:uu)venel845 (author)
Ellert, MattiasUppsala universitet,Högenergifysik(Swepub:uu)mel03009 (author)
Ferrari, Arnaud,1973-Uppsala universitet,Högenergifysik(Swepub:uu)arfer499 (author)
Gonzalez Suarez, RebecaUppsala universitet,Högenergifysik(Swepub:uu)rebgo209 (author)
Mathisen, ThomasUppsala universitet,Högenergifysik(Swepub:uu)thoma814 (author)
Mullier, GeoffreyUppsala universitet,Högenergifysik(Swepub:uu)geomu177 (author)
Ördek, SerhatUppsala universitet,Högenergifysik(Swepub:uu)seror924 (author)
Ripellino, GiuliaUppsala universitet,Högenergifysik(Swepub:uu)giuri909 (author)
Steentoft, JonasUppsala universitet,Högenergifysik(Swepub:uu)jonst734 (author)
Sunneborn Gudnadottir, OlgaUppsala universitet,Högenergifysik(Swepub:uu)olggu198 (author)
Zwalinski, L.CERN, Geneva, Switzerland (author)
Uppsala universitetHögenergifysik (creator_code:org_t)

By the author/editor: Aad, G.; Bergeås Kuutmann ...; Brenner, Richard; Dimitriadi, Chri ...; Ekelöf, Tord; Ellajosyula, Ven ...; show more...; Ellert, Mattias; Ferrari, Arnaud, ...; Gonzalez Suarez, ...; Mathisen, Thomas; Mullier, Geoffre ...; Ördek, Serhat; Ripellino, Giuli ...; Steentoft, Jonas; Sunneborn Gudnad ...; Zwalinski, L.; show less...

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NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Subatomic Physic ...

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