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Abstract:

Measurements of normalized differential cross sections for top-quark pair production are presented as a function of the top-quark transverse momentum, and of the mass, transverse momentum, and rapidity of the t¯t system, in proton-proton collisions at a center-of-mass energy of √s = 7 TeV. The data set corresponds to an integrated luminosity of 4.6 fb -1 , recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. Events are selected in the lepton + jets channel, requiring exactly one lepton and at least four jets with at least one of the jets tagged as originating from a b-quark. The measured spectra are corrected for detector efficiency and resolution effects and are compared to several Monte Carlo simulations and theory calculations. The results are in fair agreement with the predictions in a wide kinematic range. Nevertheless, data distributions are softer than predicted for higher values of the mass of the t¯t system and of the top-quark transverse momentum. The measurements can also discriminate among different sets of parton distribution functions. © Published by the American Physical Society.

Registro:

Documento: Artículo
Título:Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 2874 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2874 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2014
Volumen:90
Número:7
DOI: http://dx.doi.org/10.1103/PhysRevD.90.072004
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:15507998
CODEN:PRVDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v90_n7_p_Aad

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Citas:

---------- APA ----------
(2014) . Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector. Physical Review D - Particles, Fields, Gravitation and Cosmology, 90(7).
http://dx.doi.org/10.1103/PhysRevD.90.072004
---------- CHICAGO ----------
Aad, G. "Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector" . Physical Review D - Particles, Fields, Gravitation and Cosmology 90, no. 7 (2014).
http://dx.doi.org/10.1103/PhysRevD.90.072004
---------- MLA ----------
Aad, G. "Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 90, no. 7, 2014.
http://dx.doi.org/10.1103/PhysRevD.90.072004
---------- VANCOUVER ----------
Aad, G. Measurements of normalized differential cross sections for t¯t production in pp collisions at √(s) = 7 TeV using the ATLAS detector. Phys Rev D Part Fields Gravit Cosmol. 2014;90(7).
http://dx.doi.org/10.1103/PhysRevD.90.072004