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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..
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.ORCID-id: 0000-0003-3867-0336
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.ORCID-id: 0000-0002-8015-7512
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.ORCID-id: 0000-0001-6945-1916
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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:kth:diva-251501DOI: 10.1007/JHEP04(2019)046ISI: 000464729300001Scopus ID: 2-s2.0-85064251329OAI: oai:DiVA.org:kth-251501DiVA, id: diva2:1315936
Merknad

QC 20190515

Tilgjengelig fra: 2019-05-15 Laget: 2019-05-15 Sist oppdatert: 2019-05-15bibliografisk kontrollert

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Jensen, BengtOhm, ChristianKastanas, Konstatinos A.Ripellino, GiuliaSidebo, P. EdvinStrandberg, Jonas

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