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Abstract:

The top quark mass was measured in the channels tt → lepton+jets and tt → dilepton (lepton = e, μ) based on ATLAS data recorded in 2011. The data were taken at the LHC with a proton–proton centre-of-mass energy of √s = 7 TeV and correspond to an integrated luminosity of 4.6 fb −1 . The tt → lepton+jets analysis uses a three-dimensional template technique which determines the top quark mass together with a global jet energy scale factor (JSF), and a relative b-to-light-jet energy scale factor (bJSF), where the terms b-jets and light-jets refer to jets originating from b-quarks and u, d, c, s-quarks or gluons, respectively. The analysis of the tt → dilepton channel exploits a one-dimensional template method using the m ℓb observable, defined as the average invariant mass of the two lepton+b-jet pairs in each event. The top quark mass is measured to be 172.33 ± 0.75(stat + JSF + bJSF) ± 1.02(syst) GeV, and 173.79 ± 0.54(stat) ± 1.30(syst) GeV in the tt → lepton+jets and tt → dilepton channels, respectively. The combination of the two results yields m top = 172.99 ± 0.48(stat) ± 0.78(syst) GeV, with a total uncertainty of 0.91 GeV. © CERN for the benefit of the ATLAS collaboration 2015.

Registro:

Documento: Artículo
Título:Measurement of the top quark mass in the tt → lepton+jets and tt → dilepton channels using √s = 7 TeV ATLAS data
Autor:ATLAS Collaboration et al.
Este artículo contiene 2827 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2827 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2015
Volumen:75
Número:7
DOI: http://dx.doi.org/10.1140/epjc/s10052-015-3544-0
Título revista:European Physical Journal C
Título revista abreviado:Eur. Phys. J. C
ISSN:14346044
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v75_n7_p_ATLASCollaboration

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Citas:

---------- APA ----------
(2015) . Measurement of the top quark mass in the tt → lepton+jets and tt → dilepton channels using √s = 7 TeV ATLAS data. European Physical Journal C, 75(7).
http://dx.doi.org/10.1140/epjc/s10052-015-3544-0
---------- CHICAGO ----------
ATLAS Collaboration. "Measurement of the top quark mass in the tt → lepton+jets and tt → dilepton channels using √s = 7 TeV ATLAS data" . European Physical Journal C 75, no. 7 (2015).
http://dx.doi.org/10.1140/epjc/s10052-015-3544-0
---------- MLA ----------
ATLAS Collaboration. "Measurement of the top quark mass in the tt → lepton+jets and tt → dilepton channels using √s = 7 TeV ATLAS data" . European Physical Journal C, vol. 75, no. 7, 2015.
http://dx.doi.org/10.1140/epjc/s10052-015-3544-0
---------- VANCOUVER ----------
ATLAS Collaboration. Measurement of the top quark mass in the tt → lepton+jets and tt → dilepton channels using √s = 7 TeV ATLAS data. Eur. Phys. J. C. 2015;75(7).
http://dx.doi.org/10.1140/epjc/s10052-015-3544-0