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Measurement of top quark pair differential cross sections in the dilepton channel in pp collisions at √s=7 and 8 TeV with ATLAS
Université Mohamed Premier, Faculté des Sciences; LPTPM, Oujda.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
University of Belgrade, Institute of Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
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Number of Authors: 28492016 (English)In: PHYSICAL REVIEW D, ISSN 2470-0010, Vol. 94, no 9, article id 092003Article in journal (Refereed) Published
Abstract [en]

Measurements of normalized differential cross sections of top quark pair (t¯t) production are presented as a function of the mass, the transverse momentum and the rapidity of the t¯t system in proton-proton collisions at center-of-mass energies of √s=7 and 8 TeV. The data set 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¯t production. The results are consistent with the majority of predictions in a wide kinematic range.

Place, publisher, year, edition, pages
2016. Vol. 94, no 9, article id 092003
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Astronomy, Astrophysics and Cosmology
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URN: urn:nbn:se:uu:diva-338788DOI: 10.1103/PhysRevD.94.092003ISI: 000412634500001OAI: oai:DiVA.org:uu-338788DiVA, id: diva2:1175944
Note

ATLAS Collaboration, for complete list of authors see https://doi.org/10.1103/PhysRevD.94.092003

Title in Wos: Measurement of top quark pair differential cross sections in the dilepton channel in pp collisions at root s=7 and 8 TeV with ATLAS

Available from: 2018-01-19 Created: 2018-01-19 Last updated: 2018-01-19Bibliographically approved

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Bergeås, Elin KuutmannBokan, PetarBrenner, RichardEkelöf, TordEllert, MattiasFerrari, ArnaudGradin, P.O. JoakimMadsen, Alexander KÖhman, HenrikRangel Smith, CamilaDe Bruin, Pedro Sales
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