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Abstract:

Abstract: The normalized differential cross section for top-quark pair production in association with at least one jet is studied as a function of the inverse of the invariant mass of the tt¯(Formula presented.) + 1-jet system. This distribution can be used for a precise determination of the top-quark mass since gluon radiation depends on the mass of the quarks. The experimental analysis is based on proton-proton collision data collected by the ATLAS detector at the LHC with a centre-of-mass energy of 7 TeV corresponding to an integrated luminosity of 4.6 fb −1 . The selected events were identified using the lepton+jets top-quark-pair decay channel, where lepton refers to either an electron or a muon. The observed distribution is compared to a theoretical prediction at next-to-leading-order accuracy in quantum chromodynamics using the pole-mass scheme. With this method, the measured value of the top-quark pole mass, m t pole , is:mtpole=173.7±1.5stat.±1.4syst.−0.5+1.0theoryGeV.(Formula presented.). This result represents the most precise measurement of the top-quark pole mass to date.[Figure not available: see fulltext.] © 2015, The Author(s).

Registro:

Documento: Artículo
Título:Determination of the top-quark pole mass using tt¯tt¯ + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions
Autor:The ATLAS collaboration et al.
Este artículo contiene 2835 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2835 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Hadron-Hadron Scattering; Top physics
Año:2015
Volumen:2015
Número:10
DOI: http://dx.doi.org/10.1007/JHEP10(2015)121
Título revista:Journal of High Energy Physics
Título revista abreviado:J. High Energy Phys.
ISSN:11266708
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2015_n10_p_TheATLAScollaboration

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Citas:

---------- APA ----------
(2015) . Determination of the top-quark pole mass using tt¯tt¯ + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions. Journal of High Energy Physics, 2015(10).
http://dx.doi.org/10.1007/JHEP10(2015)121
---------- CHICAGO ----------
The ATLAS collaboration. "Determination of the top-quark pole mass using tt¯tt¯ + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions" . Journal of High Energy Physics 2015, no. 10 (2015).
http://dx.doi.org/10.1007/JHEP10(2015)121
---------- MLA ----------
The ATLAS collaboration. "Determination of the top-quark pole mass using tt¯tt¯ + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions" . Journal of High Energy Physics, vol. 2015, no. 10, 2015.
http://dx.doi.org/10.1007/JHEP10(2015)121
---------- VANCOUVER ----------
The ATLAS collaboration. Determination of the top-quark pole mass using tt¯tt¯ + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions. J. High Energy Phys. 2015;2015(10).
http://dx.doi.org/10.1007/JHEP10(2015)121