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

ATLAS Collaboration

Research output: Contribution to journalArticlepeer-review

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√=8TeV. 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.
Original languageEnglish
Article number154
Pages (from-to)1-47
Number of pages47
JournalEuropean Physical Journal C
Volume76
Issue number3
DOIs
Publication statusPublished - 17 Mar 2016

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