Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/9663
Title: Search for W ' -> tb -> qqbb decays in pp collisions at root s=8 TeV with the ATLAS detector
Authors: Aad, G.
Abbott, B.
Abdallah, J.
Khalek, S. Abdel
Abdinov, O.
Aben, R.
Adelman, J.
Keywords: Parton Distributions
Model
Issue Date: 2015
Publisher: Springer
Abstract: A search for a massive W' gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The datasetwas taken at a centre-of-mass energy of root s = 8 TeV and corresponds to 20.3 fb(-1) of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass W' bosons in the range 1.5-3.0 TeV. b-tagging is used to identify jets originating from b-quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95% confidence level are set on the W' -> tb cross section times branching ratio ranging from 0.16 pb to 0.33 pb for left-handed W' bosons, and ranging from 0.10 pb to 0.21 pb for W' bosons with purely righthanded couplings. Upper limits at 95% confidence level are set on the W'-boson coupling to tb as a function of the W' mass using an effective field theory approach, which is independent of details of particular models predicting a W' boson.
URI: https://doi.org/10.1140/epjc/s10052-015-3372-2
https://hdl.handle.net/20.500.11851/9663
ISSN: 1434-6044
1434-6052
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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