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Title
Japanese:Modelling $Z\rightarrow\tau\tau$ processes in ATLAS with $\tau$-embedded $Z\rightarrow\mu\mu$ data 
English:Modelling $Z\rightarrow\tau\tau$ processes in ATLAS with $\tau$-embedded $Z\rightarrow\mu\mu$ data 
Author
Japanese: 山口洋平.  
English: Youhei Yamaguchi.  
Language English 
Journal/Book name
Japanese: 
English: 
Volume, Number, Page Vol. "10"    No. "09"    pp. "P09018"
Published date June 2015 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
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English: 
Official URL http://inspirehep.net/record/1376944
 
DOI https://doi.org/10.1088/1748-0221/10/09/P09018
Abstract 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 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 H→ττ analysis of the full datataset recorded during 2011 and

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