0466009 - FZÚ 2017 RIV DE eng J - Journal Article
Aad, G. - Abbott, B. - Abdallah, J. - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … Total 2864 authors
Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at √s=8 TeV.
European Physical Journal C. Roč. 76, č. 3 (2016), s. 1-70, č. článku 154. ISSN 1434-6044. E-ISSN 1434-6052
Institutional support: RVO:68378271
Keywords : CERN LHC Coll * background * structure * ATLAS * mass resolution
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 5.297, year: 2016 ; AIS: 1.673, rok: 2016
DOI: https://doi.org/10.1140/epjc/s10052-016-3978-z

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.

Permanent Link: http://hdl.handle.net/11104/0264469