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

Aad, G.; Abbott, B.; Adomeit, Stefanie; Becker, S. und Biebel, Otmar (2016): Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at root s=8 TeV. In: European Physical Journal C, Vol. 76, No. 3, 154

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 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.

• Item Type: Journal article
• Faculties: Physics
• Subjects: 500 Science > 530 Physics
• ISSN: 1434-6044
• Annotation: ATLAS Collaboration: weitere AutorInnen siehe PDF
• Language: English