Measurement of lepton differential distributions and the top quark mass in t ̄t production in pp collisions at √s = 8 TeV with the ATLAS detector

This paper presents single lepton and dilepton kinematic distributions measured in dileptonic t ̄t events produced in 20.2 fb<sup>−1</sup> of √s = 8 TeV pp collisions recorded by the ATLAS experiment at the LHC. Both absolute and normalised differential cross-sections are measured, using...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Exactas
Física
leptons
top quark
Medición
proton-proton collisions
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79758
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79758
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
leptons
top quark
Medición
proton-proton collisions
spellingShingle Ciencias Exactas
Física
leptons
top quark
Medición
proton-proton collisions
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Measurement of lepton differential distributions and the top quark mass in t ̄t production in pp collisions at √s = 8 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
leptons
top quark
Medición
proton-proton collisions
description This paper presents single lepton and dilepton kinematic distributions measured in dileptonic t ̄t events produced in 20.2 fb<sup>−1</sup> of √s = 8 TeV pp collisions recorded by the ATLAS experiment at the LHC. Both absolute and normalised differential cross-sections are measured, using events with an opposite-charge eμ pair and one or two b-tagged jets. The cross-sections are measured in a fiducial region corresponding to the detector acceptance for lep- tons, and are compared to the predictions from a variety of Monte Carlo event generators, as well as fixed-order QCD calculations, exploring the sensitivity of the cross-sections to the gluon parton distribution function. Some of the distributions are also sensitive to the top quark pole mass; a combined fit of NLO fixed-order predictions to all the measured distributions yields a top quark mass value of m<sup>pole</sup><sub>t</sub> = 173.2±0.9±0.8±1.2 GeV, where the three uncertainties arise from data statistics, experimental systematics, and theoretical sources.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Measurement of lepton differential distributions and the top quark mass in t ̄t production in pp collisions at √s = 8 TeV with the ATLAS detector
title_short Measurement of lepton differential distributions and the top quark mass in t ̄t production in pp collisions at √s = 8 TeV with the ATLAS detector
title_full Measurement of lepton differential distributions and the top quark mass in t ̄t production in pp collisions at √s = 8 TeV with the ATLAS detector
title_fullStr Measurement of lepton differential distributions and the top quark mass in t ̄t production in pp collisions at √s = 8 TeV with the ATLAS detector
title_full_unstemmed Measurement of lepton differential distributions and the top quark mass in t ̄t production in pp collisions at √s = 8 TeV with the ATLAS detector
title_sort measurement of lepton differential distributions and the top quark mass in t ̄t production in pp collisions at √s = 8 tev with the atlas detector
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/79758
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