@Article{ATLASCollaborationAad_etal2015, author="ATLAS Collaboration (Aad, G. et al and Alvarez Piqueras, D. and Cabrera Urban, S. and Castillo Gimenez, V. and Costa, M. J. and Fernandez Martinez, P. and Ferrer, A. and Fiorini, L. and Fuster, J. and Garcia, C. and Garcia Navarro, J. E. and Gonzalez de la Hoz, S. and Hernandez Jimenez, Y. and Higon-Rodriguez, E. and Irles Quiles, A. and Jimenez Pena, J. and Kaci, M. and King, M. and Lacasta, C. and Lacuesta, V. R. and Marti-Garcia, S. and Mitsou, V. A. and Oliver Garcia, E. and Pedraza Lopez, S. and Perez Garcia-Esta{\~A}{\textpm}, M. T. and Romero Adam, E. and Ros, E. and Salt, J. and Sanchez Martinez, V. and Soldevila, U. and Sanchez, J. and Torro Pastor, E. and Valero, A. and Valladolid Gallego, E. and Valls Ferrer, J. A. and Vos, M.", title="Modelling Z -> $\tau$$\tau$ processes in ATLAS with $\tau$-embedded Z -> $\mu$$\mu$ data", journal="Journal of Instrumentation", year="2015", publisher="Iop Publishing Ltd", volume="10", pages="P09018 - 41pp", optkeywords="Performance of High Energy Physics Detectors; Simulation methods and programs; Analysis and statistical methods", 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.", optnote="WOS:000362421300021", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2410), last updated on Thu, 29 Oct 2015 16:15:53 +0000", issn="1748-0221", doi="10.1088/1748-0221/10/09/P09018", opturl="http://arxiv.org/abs/1506.05623", opturl="https://doi.org/10.1088/1748-0221/10/09/P09018", archivePrefix="arXiv", eprint="1506.05623", language="English" }