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

CollaborationWith : Ancu, Lucian Stefan / Bell, William / Benhar Noccioli, Eleonora / Bilbao De Mendizabal, Javier / Calace, Noemi / Clark, Allan Geoffrey / Coccaro, Andrea / Delitzsch, Chris Malena / Della Volpe, Domenico / Ferrere, Didier / Gadomski, Szymon / Golling, Tobias / Gonzalez Sevilla, Sergio / Gramling, Johanna Léna / Guescini, Francesco / Iacobucci, Giuseppe / Katre, Akshay / Mermod, Philippe / Miucci, Antonio / Muenstermann, Daniel / Paolozzi, Lorenzo / Picazio, Attilio / Ristic, Branislav / Schramm, Steven / Tykhonov, Andrii / Vallecorsa, Sofia / Wu, Xin
Published in European Physical Journal. C. 2016, vol. 76, no. 3, p. 154
Collection Open Access - SCOAP3
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.
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ATLAS COLLABORATION. Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at √s = 8 TeV. In: European Physical Journal. C, 2016, vol. 76, n° 3, p. 154. https://archive-ouverte.unige.ch/unige:82199

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Deposited on : 2016-04-01

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