Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/9502
Title: | Modelling Z -> tau tau processes in ATLAS with tau-embedded Z -> mu mu data | Authors: | Aad, G. Abbott, B. Abdallah, J. Abdinov, O. Aben, R. Abolins, M. Adye, T. |
Keywords: | Performance of High Energy Physics Detectors Simulation methods and programs Analysis and statistical methods Tauspinner |
Issue Date: | 2015 | Publisher: | IOP Publishing Ltd | Abstract: | This paper describes the concept, technical realisation and validation of a largely data-driven method to model events with Z -> tau tau decays. In Z -> mu mu events selected from proton-proton collision data recorded at root s = 8 TeV with the ATLAS experiment at the LHC in 2012, the Z decay muons are replaced by tau leptons from simulated Z -> tau tau decays at the level of reconstructed tracks and calorimeter cells. The tau lepton kinematics are derived from the kinematics of the original muons. Thus, only the well-understood decays of the Z boson and tau leptons as well as the detector response to the tau 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 tau-embedding method is particularly relevant for Higgs boson searches and analyses in tau tau final states, where Z -> tau tau 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 -> tau tau analysis of the full datataset recorded during 2011 and 2012. | URI: | https://doi.org/10.1088/1748-0221/10/09/P09018 https://hdl.handle.net/20.500.11851/9502 |
ISSN: | 1748-0221 |
Appears in Collections: | WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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