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Measurements of inclusive and differential fiducial cross-sections of t(t)over-bar production with additional heavy-flavour jets in proton-proton collisions at root s=13 TeV with the ATLAS detector
Univ Mohamed Premier, Fac Sci, Oujda, Morocco; LPTPM, Oujda, Morocco.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.ORCID-id: 0000-0002-1253-8583
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
Vise andre og tillknytning
Rekke forfattare: 29292019 (engelsk)Inngår i: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, nr 4, artikkel-id 046Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This paper presents measurements of tt (t) over bar 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 (t) over bar 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 t (t) over barb (b) over bar 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.

sted, utgiver, år, opplag, sider
SPRINGER , 2019. nr 4, artikkel-id 046
Emneord [en]
Hadron-Hadron scattering (experiments), Heavy quark production
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-382982DOI: 10.1007/JHEP04(2019)046ISI: 000464729300001OAI: oai:DiVA.org:uu-382982DiVA, id: diva2:1315198
Forskningsfinansiär
Swedish Research CouncilEU, European Research CouncilEU, Horizon 2020German Research Foundation (DFG)Danish National Research FoundationWallenberg FoundationsEU, European Research Council
Merknad

For complete list of authors see http://dx.doi.org/10.1007/JHEP04(2019)046

Tilgjengelig fra: 2019-05-13 Laget: 2019-05-13 Sist oppdatert: 2019-05-13bibliografisk kontrollert

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Asimakopoulou, Eleni M.Bergeås Kuutmann, ElinBokan, PetarBrenner, RichardEkelöf, TordEllert, MattiasFerrari, ArnaudGradin, P. O. JoakimIsacson, Max F.Mårtensson, Mikael U.F.Sales De Bruin, Pedro
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