Please use this identifier to cite or link to this item:
Scopus Web of Science® Altmetric
Type: Journal article
Title: Search for s-channel single top-quark production in proton–proton collisions at √s = 8 TeV with the ATLAS detector
Other Titles: Search for s-channel single top-quark production in proton-proton collisions at root s = 8 TeV with the ATLAS detector
Author: ATLAS Collaboration
Aad, G.
Citation: Physics Letters B, 2015; 740:118-136
Publisher: Elsevier
Issue Date: 2015
ISSN: 0370-2693
Statement of
G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni ... M. White ... et al. (ATLAS Collaboration)
Abstract: This Letter presents a search at the LHC for s-channel single top-quark production in proton–proton collisions at a centre-of-mass energy of 8TeV. The analyzeddata set was recorded by the ATLAS detector and corresponds to an integrated luminosity of 20.3fb−1. Selected events contain one charged lepton, large missing transverse momentum and exactly two b-tagged jets. A multivariate event classifier based on boosted decision trees is developed to discriminate s-channel single top-quark events from the main background contributions. The signal extraction is based on a binned maximum-likelihood fit of the output classifier distribution. The analysis leads to an upper limit on the s-channel single top-quark production cross-section of 14.6pb at the 95% confidence level. The fit gives a cross-section of σs=5.0 ±4.3pb, consistent with the Standard Model expectation.
Keywords: ATLAS; top-quark; electroweak production; s-Channel
Rights: © 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license ( Funded by SCOAP3.
RMID: 0030018910
DOI: 10.1016/j.physletb.2014.11.042
Appears in Collections:Physics publications

Files in This Item:
File Description SizeFormat 
hdl_102109.pdfPublished version1.32 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.