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Abstract:

This paper describes the concept, technical realisation and validation of a largely data-driven method to model events with Zττ decays. In Zμμ 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 Zarrowττ 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 Zarrowττ 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 Hττ analysis of the full datataset recorded during 2011 and 2012. © CERN 2015 for the benefit of the ATLAS collaboration.

Registro:

Documento: Artículo
Título:Modelling Z ττ processes in ATLAS with τ-embedded Z μμ data
Autor:Aad, G. et al.
Este artículo contiene 2850 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2850 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Bosons; Charged particles; Elementary particles; Kinematics; Tellurium compounds; ATLAS experiment; Calorimeter cells; Data-driven methods; Decay products; Detector response; Embedding method; Multiple interactions; Proton proton collisions; Decay (organic)
Año:2015
Volumen:10
Número:9
DOI: http://dx.doi.org/10.1088/1748-0221/10/09/P09018
Título revista:Journal of Instrumentation
Título revista abreviado:J. Instrum.
ISSN:17480221
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17480221_v10_n9_p_Aad

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Citas:

---------- APA ----------
(2015) . Modelling Z ττ processes in ATLAS with τ-embedded Z μμ data. Journal of Instrumentation, 10(9).
http://dx.doi.org/10.1088/1748-0221/10/09/P09018
---------- CHICAGO ----------
Aad, G. "Modelling Z ττ processes in ATLAS with τ-embedded Z μμ data" . Journal of Instrumentation 10, no. 9 (2015).
http://dx.doi.org/10.1088/1748-0221/10/09/P09018
---------- MLA ----------
Aad, G. "Modelling Z ττ processes in ATLAS with τ-embedded Z μμ data" . Journal of Instrumentation, vol. 10, no. 9, 2015.
http://dx.doi.org/10.1088/1748-0221/10/09/P09018
---------- VANCOUVER ----------
Aad, G. Modelling Z ττ processes in ATLAS with τ-embedded Z μμ data. J. Instrum. 2015;10(9).
http://dx.doi.org/10.1088/1748-0221/10/09/P09018