Measurements of normalized differential cross sections for t͞t production in pp collisions at √(s) = 7 TeV using the ATLAS detector

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 t͞t system, in proton proton collisions at a center-of-mass energy of √s = 7 TeV. The data...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín Fernando, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Exactas
Física
Hadron-induced high- and super-high-energy interactions
Experimental tests
Top quarks
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/136084
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-136084
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Hadron-induced high- and super-high-energy interactions
Experimental tests
Top quarks
spellingShingle Ciencias Exactas
Física
Hadron-induced high- and super-high-energy interactions
Experimental tests
Top quarks
Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
Measurements of normalized differential cross sections for t͞t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
topic_facet Ciencias Exactas
Física
Hadron-induced high- and super-high-energy interactions
Experimental tests
Top quarks
description 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 t͞t 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 t͞t system and of the top-quark transverse momentum. The measurements can also discriminate among different sets of parton distribution functions.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Measurements of normalized differential cross sections for t͞t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
title_short Measurements of normalized differential cross sections for t͞t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
title_full Measurements of normalized differential cross sections for t͞t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
title_fullStr Measurements of normalized differential cross sections for t͞t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
title_full_unstemmed Measurements of normalized differential cross sections for t͞t production in pp collisions at √(s) = 7 TeV using the ATLAS detector
title_sort measurements of normalized differential cross sections for t͞t production in pp collisions at √(s) = 7 tev using the atlas detector
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/136084
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