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Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at √s = 8 TeV
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 2850
2016 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 76, no 3, 154Article in journal (Refereed) Published
Abstract [en]

This paper reports a detailed study of techniques for identifying boosted, hadronically decaying W bosons using 20.3 fb (Formula presented.) of proton–proton collision data collected by the ATLAS detector at the LHC at a centre-of-mass energy (Formula presented.). 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
Springer-Verlag New York, 2016. Vol. 76, no 3, 154
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Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-187910DOI: 10.1140/epjc/s10052-016-3978-zScopusID: 2-s2.0-84961620256OAI: oai:DiVA.org:kth-187910DiVA: diva2:932287
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QC 20160601

Available from: 2016-06-01 Created: 2016-06-01 Last updated: 2016-06-01Bibliographically approved

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Lund-Jensen, BengtSidebo, EdvinStrandberg, Jonas
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