y Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at root s=8 TeV
Number of Authors: 2864
2016 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 76, no 3, 154Article in journal (Refereed) Published
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 root 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.
Place, publisher, year, edition, pages
2016. Vol. 76, no 3, 154
IdentifiersURN: urn:nbn:se:su:diva-130968DOI: 10.1140/epjc/s10052-016-3978-zISI: 000375303400005OAI: oai:DiVA.org:su-130968DiVA: diva2:936542