Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data
This paper describes the concept, technical realisation and validation of a largely datadriven method to model events with Z→tt decays. In Z→μμ events selected from proton-proton collision data recorded at √s=8 TeV with the ATLAS experiment at the LHC in 2012, the Z decay muons are replaced by t lep...
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Autores principales: | , , , , , , |
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Formato: | Articulo |
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2015
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/80854 |
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I19-R120-10915-80854 |
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institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Exactas Física Altas energías Análisis Estadístico Simulación |
spellingShingle |
Ciencias Exactas Física Altas energías Análisis Estadístico Simulación Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data |
topic_facet |
Ciencias Exactas Física Altas energías Análisis Estadístico Simulación |
description |
This paper describes the concept, technical realisation and validation of a largely datadriven method to model events with Z→tt decays. In Z→μμ events selected from proton-proton collision data recorded at √s=8 TeV with the ATLAS experiment at the LHC in 2012, the Z decay muons are replaced by t leptons from simulated Z→tt decays at the level of reconstructed tracks and calorimeter cells. The t lepton kinematics are derived from the kinematics of the original muons. Thus, only the well-understood decays of the Z boson and t leptons as well as the detector response to the t decay products are obtained from simulation. All other aspects of the event, such as the Z boson and jet kinematics as well as effects from multiple interactions, are given by the actual data. This so-called t-embedding method is particularly relevant for Higgs boson searches and analyses in tt final states, where Z → tt decays constitute a large irreducible background that cannot be obtained directly from data control samples. In this paper, the relevant concepts are discussed based on the implementation used in the ATLAS Standard Model H ! tt analysis of the full datataset recorded during 2011 and 2012. |
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 |
Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data |
title_short |
Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data |
title_full |
Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data |
title_fullStr |
Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data |
title_full_unstemmed |
Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data |
title_sort |
modelling z → ττ processes in atlas with τ- embedded z → μμ data |
publishDate |
2015 |
url |
http://sedici.unlp.edu.ar/handle/10915/80854 |
work_keys_str_mv |
AT alconadaverzinimariajosefina modellingzttprocessesinatlaswithtembeddedzmmdata AT alonsofrancisco modellingzttprocessesinatlaswithtembeddedzmmdata AT arduhfranciscoanuar modellingzttprocessesinatlaswithtembeddedzmmdata AT dovamariateresa modellingzttprocessesinatlaswithtembeddedzmmdata AT monticellifernandogabriel modellingzttprocessesinatlaswithtembeddedzmmdata AT wahlberghernanpablo modellingzttprocessesinatlaswithtembeddedzmmdata AT theatlascollaboration modellingzttprocessesinatlaswithtembeddedzmmdata |
bdutipo_str |
Repositorios |
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1764820487801667587 |