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

, The ATLAS collaboration (2016) Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at √s=8 TeV. European Physical Journal C: Particles and Fields, 76 (3). ISSN 1434-6044

[img]
Preview
PDF (art%3A10.1140%2Fepjc%2Fs10052-016-3978-z)
art_3A10.1140_2Fepjc_2Fs10052_016_3978_z.pdf - Published Version
Available under License Creative Commons Attribution.

Download (4MB)

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 = 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.

Item Type:
Journal Article
Journal or Publication Title:
European Physical Journal C: Particles and Fields
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2201
Subjects:
ID Code:
79625
Deposited By:
Deposited On:
18 May 2016 08:40
Refereed?:
Yes
Published?:
Published
Last Modified:
30 Oct 2020 03:36