Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/77350
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DC Field | Value | Language |
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dc.contributor.author | Jackson, P. | - |
dc.contributor.author | Soni, N. | - |
dc.contributor.author | White, M. | - |
dc.contributor.other | Jackson, Paul Douglas | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | Physics Letters B: Nuclear Physics and Particle Physics, 2013; 718(4-5):1284-1302 | - |
dc.identifier.issn | 0370-2693 | - |
dc.identifier.issn | 1873-2445 | - |
dc.identifier.uri | http://hdl.handle.net/2440/77350 | - |
dc.description | ATLAS Collaboration member: Paul Douglas Jackson of School of Chemistry and Physics, University of Adelaide, Adelaide, Australia. | - |
dc.description.abstract | A search is presented for production of a heavy up-type quark (t′) together with its antiparticle, assuming a significant branching ratio for subsequent decay into a W boson and a b quark. The search is based on 4.7 fb⁻¹ of pp collisions at √s=7 TeV recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. Data are analyzed in the lepton + jets final state, characterized by a high-transverse-momentum isolated electron or muon, large missing transverse momentum and at least three jets. The analysis strategy relies on the substantial boost of the W bosons in the t′¯t′ signal when mt′≳400 GeVmt′≳400 GeV. No significant excess of events above the Standard Model expectation is observed and the result of the search is interpreted in the context of fourth-generation and vector-like quark models. Under the assumption of a branching ratio BR(t′→Wb)=1BR(t′→Wb)=1, a fourth-generation t′t′ quark with mass lower than 656 GeV656 GeV is excluded at 95% confidence level. In addition, in light of the recent discovery of a new boson of mass ∼126 GeV∼126 GeV at the LHC, upper limits are derived in the two-dimensional plane of BR(t′→Wb)BR(t′→Wb) versus BR(t′→Ht)BR(t′→Ht), where H is the Standard Model Higgs boson, for vector-like quarks of various masses. | - |
dc.description.statementofresponsibility | ATLAS Collaboration | - |
dc.language.iso | en | - |
dc.publisher | Elsevier Science BV | - |
dc.rights | © 2012 CERN. Published by Elsevier B.V. All rights reserved. | - |
dc.source.uri | http://dx.doi.org/10.1016/j.physletb.2012.11.071 | - |
dc.title | Search for pair production of heavy top-like quarks decaying to a high-p(T) W boson and a b quark in the lepton plus jets final state at √s=7 TeV with the ATLAS detector | - |
dc.title.alternative | Search for pair production of heavy top-like quarks decaying to a high-p(T) W boson and a b quark in the lepton plus jets final state at root s=7 TeV with the ATLAS detector | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1016/j.physletb.2012.11.071 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Jackson, P. [0000-0002-0847-402X] | - |
dc.identifier.orcid | White, M. [0000-0001-5474-4580] | - |
Appears in Collections: | Aurora harvest 4 Chemistry and Physics publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_77350.pdf | Published version | 1.45 MB | Adobe PDF | View/Open |
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