Artículo
Modelling Z→ττ processes in ATLAS with τ-embedded Z→μμ data
Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Aben, R.; Alconada Verzini, María Josefina
; Alonso, Francisco
; Arduh, Francisco Anuar
; Dova, Maria Teresa
; Monticelli, Fernando Gabriel
; Wahlberg, Hernan Pablo
; Otero y Garzon, Gustavo Javier
; Piegaia, Ricardo Nestor
; Reisin, Hernan Diego
; Sacerdoti, Sabrina
; Zieminska, D.; Zimine, N. I.; Zimmermann, C.; Zimmermann, S.; Zinonos, Z.; Zinser, M.; Ziolkowski, M.; Živković, L.; Zobernig, G.; Zoccoli, A.; Nedden, M. zur; Zurzolo, G.; Zwalinski, L.; The ATLAS Collaboration
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Fecha de publicación:
09/2015
Editorial:
IOP Publishing
Revista:
Journal of Instrumentation
ISSN:
1748-0221
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
This paper describes the concept, technical realisation and validation of a largely data-driven method to model events with Z → ττ 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 τ leptons from simulated Z → ττ decays at the level of reconstructed tracks and calorimeter cells. The τ lepton kinematics are derived from the kinematics of the original muons. Thus, only the well-understood decays of the Z boson and τ leptons as well as the detector response to the τ 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 τ-embedding method is particularly relevant for Higgs boson searches and analyses in ττ final states, where Z → ττ 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 → ττ analysis of the full datataset recorded during 2011 and 2012
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Articulos de INST.DE FISICA LA PLATA
Articulos de INST.DE FISICA LA PLATA
Citación
Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Aben, R.; et al.; Modelling Z→ττ processes in ATLAS with τ-embedded Z→μμ data; IOP Publishing; Journal of Instrumentation; 10; 9-2015
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