Measurements of top quark spin observables in t¯t events using dilepton final states in √s = 8 TeV pp collisions with the ATLAS detector

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Measurements of top quark spin observables in t¯t events are presented based on 20.2 fb−1 of √s = 8 TeV proton-proton collisions recorded with the ATLAS detector at the LHC. The analysis is performed in the dilepton final state, characterised by the presence of two isolated leptons (electrons or muo...

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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
top quark
ATLAS detector
quantum chromodynamics
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82086
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82086
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
ATLAS detector
quantum chromodynamics
spellingShingle Ciencias Exactas
Física
top quark
ATLAS detector
quantum chromodynamics
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Measurements of top quark spin observables in t¯t events using dilepton final states in √s = 8 TeV pp collisions with the ATLAS detector
topic_facet Ciencias Exactas
Física
top quark
ATLAS detector
quantum chromodynamics
description Measurements of top quark spin observables in t¯t events are presented based on 20.2 fb−1 of √s = 8 TeV proton-proton collisions recorded with the ATLAS detector at the LHC. The analysis is performed in the dilepton final state, characterised by the presence of two isolated leptons (electrons or muons). There are 15 observables, each sensitive to a different coefficient of the spin density matrix of t¯t production, which are measured independently. Ten of these observables are measured for the first time. All of them are corrected for detector resolution and acceptance effects back to the parton and stable-particle levels. The measured values of the observables at parton level are compared to Standard Model predictions at next-to-leading order in QCD. The corrected distributions at stable-particle level are presented and the means of the distributions are compared to Monte Carlo predictions. No significant deviation from the Standard Model is observed for any observable.
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 Measurements of top quark spin observables in t¯t events using dilepton final states in √s = 8 TeV pp collisions with the ATLAS detector
title_short Measurements of top quark spin observables in t¯t events using dilepton final states in √s = 8 TeV pp collisions with the ATLAS detector
title_full Measurements of top quark spin observables in t¯t events using dilepton final states in √s = 8 TeV pp collisions with the ATLAS detector
title_fullStr Measurements of top quark spin observables in t¯t events using dilepton final states in √s = 8 TeV pp collisions with the ATLAS detector
title_full_unstemmed Measurements of top quark spin observables in t¯t events using dilepton final states in √s = 8 TeV pp collisions with the ATLAS detector
title_sort measurements of top quark spin observables in t¯t events using dilepton final states in √s = 8 tev pp collisions with the atlas detector
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/82086
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