Measurements of the charge asymmetry in top-quark pair production in the dilepton final state at √s = 8 TeV with the ATLAS detector

Measurements of the top-antitop quark pair production charge asymmetry in the dilepton channel, characterized by two high-p<sub>T</sub> leptons (electrons or muons), are presented using data corresponding to an integrated luminosity of 20.3 fb<sup>-1</sup> from pp collisions...

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Detalles Bibliográficos
Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Exactas
Física
proton-proton collisions
ATLAS detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86773
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86773
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
proton-proton collisions
ATLAS detector
spellingShingle Ciencias Exactas
Física
proton-proton collisions
ATLAS detector
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Measurements of the charge asymmetry in top-quark pair production in the dilepton final state at √s = 8 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
proton-proton collisions
ATLAS detector
description Measurements of the top-antitop quark pair production charge asymmetry in the dilepton channel, characterized by two high-p<sub>T</sub> leptons (electrons or muons), are presented using data corresponding to an integrated luminosity of 20.3 fb<sup>-1</sup> from pp collisions at a center-of-mass energy √s = 8 TeV collected with the ATLAS detector at the Large Hadron Collider at CERN. Inclusive and differential measurements as a function of the invariant mass, transverse momentum, and longitudinal boost of the tt system are performed both in the full phase space and in a fiducial phase space closely matching the detector acceptance. Two observables are studied: A<sup>ℓℓ</sup><sub>C</sub> based on the selected leptons and ACtt based on the reconstructed tt final state. The inclusive asymmetries are measured in the full phase space to be A<sup>ℓℓ</sup><sub>C</sub>=0.008±0.006 and A<sup>tt</sup><sub>C</sub>=0.021±0.016, which are in agreement with the Standard Model predictions of A<sup>ℓℓ</sup><sub>C</sub>=0.0064±0.0003 and A<sup>tt</sup><sub>C</sub>=0.0111±0.0004.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Measurements of the charge asymmetry in top-quark pair production in the dilepton final state at √s = 8 TeV with the ATLAS detector
title_short Measurements of the charge asymmetry in top-quark pair production in the dilepton final state at √s = 8 TeV with the ATLAS detector
title_full Measurements of the charge asymmetry in top-quark pair production in the dilepton final state at √s = 8 TeV with the ATLAS detector
title_fullStr Measurements of the charge asymmetry in top-quark pair production in the dilepton final state at √s = 8 TeV with the ATLAS detector
title_full_unstemmed Measurements of the charge asymmetry in top-quark pair production in the dilepton final state at √s = 8 TeV with the ATLAS detector
title_sort measurements of the charge asymmetry in top-quark pair production in the dilepton final state at √s = 8 tev with the atlas detector
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/86773
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AT alonsofrancisco measurementsofthechargeasymmetryintopquarkpairproductioninthedileptonfinalstateats8tevwiththeatlasdetector
AT arduhfranciscoanuar measurementsofthechargeasymmetryintopquarkpairproductioninthedileptonfinalstateats8tevwiththeatlasdetector
AT dovamariateresa measurementsofthechargeasymmetryintopquarkpairproductioninthedileptonfinalstateats8tevwiththeatlasdetector
AT monticellifernandogabriel measurementsofthechargeasymmetryintopquarkpairproductioninthedileptonfinalstateats8tevwiththeatlasdetector
AT wahlberghernanpablo measurementsofthechargeasymmetryintopquarkpairproductioninthedileptonfinalstateats8tevwiththeatlasdetector
AT theatlascollaboration measurementsofthechargeasymmetryintopquarkpairproductioninthedileptonfinalstateats8tevwiththeatlasdetector
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