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Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at √s = 8  TeV

Author(s)
Taylor, Frank E
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Abstract
This paper reports a detailed study of techniques for identifying boosted, hadronically decaying W bosons using 20.3 fb−1 of proton–proton collision data collected by the ATLAS detector at the LHC at a centre-of-mass energy √s = 8 TeV. A range of techniques for optimising the signal jet mass resolution are combined with various jet substructure variables. The results of these studies in Monte Carlo simulations show that a simple pairwise combination of groomed jet mass and one substructure variable can provide a 50 % efficiency for identifying W bosons with transverse momenta larger than 200 GeV while maintaining multijet background efficiencies of 2–4 % for jets with the same transverse momentum. These signal and background efficiencies are confirmed in data for a selection of tagging techniques.
Date issued
2016-03
URI
http://hdl.handle.net/1721.1/105496
Department
Massachusetts Institute of Technology. Department of Physics
Journal
The European Physical Journal C
Publisher
Springer-Verlag
Citation
Atlas Collaboration et al. “Identification of Boosted, Hadronically Decaying W Bosons and Comparisons with ATLAS Data Taken at √s = 8 TeV.” The European Physical Journal C 76.3 (2016): n. pag. © 2016 CERN for the benefit of the ATLAS collaboration
Version: Final published version
ISSN
1434-6044
1434-6052

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