Search for W → t¯ b in the lepton plus jets final state in proton–proton collisions at a centre-of-mass energy of √s = 8 TeV with the ATLAS detector

Allison, Lee and Barton, Adam and Beattie, Michael and Borissov, Guennadi and Bouhova-Thacker, Eva and Chilingarov, Alexandre and Dearnaley, William and Fox, Harald and Grimm, Kathryn and Henderson, Robert and Hughes, Gareth and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin and Love, Peter and Maddocks, Harvey and Smizanska, Maria and Walder, James (2015) Search for W → t¯ b in the lepton plus jets final state in proton–proton collisions at a centre-of-mass energy of √s = 8 TeV with the ATLAS detector. Physics Letters B, 743. pp. 235-255. ISSN 0370-2693

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Abstract

A search for new charged massive gauge bosons, called W, is performed with the ATLAS detector at the LHC, in proton–proton collisions at a centre-of-mass energy of √s = 8 TeV, using a dataset corresponding to an integrated luminosity of 20.3 fb−1. This analysis searches for W bosons in the W → t¯b decay channel in final states with electrons or muons, using a multivariate method based on boosted decision trees. The search covers masses between 0.5 and 3.0 TeV, for right-handed or left-handed W bosons. No significant deviation from the Standard Model expectation is observed and limits are set on the W → t¯b cross-section times branching ratio and on the W-boson effective couplings as a function of the W-boson mass using the CLs procedure. For a left-handed (right-handed) W boson, masses below 1.70 (1.92) TeV are excluded at 95% confidence level.

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Additional Information:
This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
74064
Deposited By:
Deposited On:
18 Jun 2015 06:00
Refereed?:
Yes
Published?:
Published
Last Modified:
02 Jul 2020 01:55