Measurement of the charge asymmetry in top quark pair production in pp collisions at √s = 7 TeV using the ATLAS detector

A measurement of the top-antitop production charge asymmetry <i>A<sub>C</sub></i> is presented using data corresponding to an integrated luminosity of 1.04 fb<sup>−1</sup> of pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC. Events are select...

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Detalles Bibliográficos
Autores principales: Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín F., Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Ciencias Exactas
Física
top quark
proton-proton collisions
ATLAS detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79714
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79714
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
top quark
proton-proton collisions
ATLAS detector
spellingShingle Ciencias Exactas
Física
top quark
proton-proton collisions
ATLAS detector
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Measurement of the charge asymmetry in top quark pair production in pp collisions at √s = 7 TeV using the ATLAS detector
topic_facet Ciencias Exactas
Física
top quark
proton-proton collisions
ATLAS detector
description A measurement of the top-antitop production charge asymmetry <i>A<sub>C</sub></i> is presented using data corresponding to an integrated luminosity of 1.04 fb<sup>−1</sup> of pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC. Events are selected with a single lepton (electron or muon), missing transverse momentum and at least four jets of which at least one jet is identified as coming from a b-quark. A kinematic fit is used to reconstruct the t ̄t event topology. After background subtraction, a Bayesian unfolding procedure is performed to correct for acceptance and detector effects. The measured value of <i>A<sub>C</sub></i> is <i>A<sub>C</sub></i> = −0.019±0.028 (stat.)±0.024 (syst.), consistent with the prediction from the MC@NLO Monte Carlo generator of <i>A<sub>C</sub></i> = 0.006 ± 0.002. Measurements of <i>A<sub>C</sub></i> in two ranges of invariant mass of the top-antitop pair are also shown.
format Articulo
Articulo
author Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Anduaga, Xabier Sebastián
title Measurement of the charge asymmetry in top quark pair production in pp collisions at √s = 7 TeV using the ATLAS detector
title_short Measurement of the charge asymmetry in top quark pair production in pp collisions at √s = 7 TeV using the ATLAS detector
title_full Measurement of the charge asymmetry in top quark pair production in pp collisions at √s = 7 TeV using the ATLAS detector
title_fullStr Measurement of the charge asymmetry in top quark pair production in pp collisions at √s = 7 TeV using the ATLAS detector
title_full_unstemmed Measurement of the charge asymmetry in top quark pair production in pp collisions at √s = 7 TeV using the ATLAS detector
title_sort measurement of the charge asymmetry in top quark pair production in pp collisions at √s = 7 tev using the atlas detector
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/79714
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