Measurement of top quark pair differential cross sections in the dilepton channel in pp collisions at √<i>s</i>=7 and 8 TeV with ATLAS



Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2839 more authors) (2016) Measurement of top quark pair differential cross sections in the dilepton channel in pp collisions at √<i>s</i>=7 and 8 TeV with ATLAS. PHYSICAL REVIEW D, 94 (9). 092003-.

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Abstract

Measurements of normalized differential cross-sections of top quark pair ($t\bar t$) production are presented as a function of the mass, the transverse momentum and the rapidity of the $t\bar t$ system in proton-proton collisions at center-of-mass energies of $\sqrt{s}$ = 7 TeV and 8 TeV. The dataset corresponds to an integrated luminosity of 4.6 fb$^{-1}$ at 7 TeV and 20.2 fb$^{-1}$ at 8 TeV, recorded with the ATLAS detector at the Large Hadron Collider. Events with top quark pair signatures are selected in the dilepton final state, requiring exactly two charged leptons and at least two jets with at least one of the jets identified as likely to contain a $b$-hadron. The measured distributions are corrected for detector effects and selection efficiency to cross-sections at the parton level. The differential cross-sections are compared with different Monte Carlo generators and theoretical calculations of $t\bar t$ production. The results are consistent with the majority of predictions in a wide kinematic range.

Item Type: Article
Additional Information: 34 pages plus author list (51 pages total), 11 figures, 10 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2015-07/
Uncontrolled Keywords: hep-ex, hep-ex
Depositing User: Symplectic Admin
Date Deposited: 03 Jan 2017 15:34
Last Modified: 14 Oct 2023 09:37
DOI: 10.1103/PhysRevD.94.092003
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3005063