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Göran Jarlskog

Göran Jarlskog

Professor emeritus

Göran Jarlskog

Search for the production of single vector-like and excited quarks in the Wt final state in pp collisions at √s = 8 TeV with the ATLAS detector

Author

  • G Aad
  • B. Abbott
  • J Abdallah
  • O Abdinov
  • R Aben
  • M Abolins
  • Torsten Åkesson
  • Simona Bocchetta
  • Lene Bryngemark
  • Caterina Doglioni
  • Anders Floderus
  • Anthony Hawkins
  • Vincent Hedberg
  • Jenny Ivarsson
  • Göran Jarlskog
  • Else Lytken
  • Ulf Mjörnmark
  • Oxana Smirnova
  • Oleksandr Viazlo

Summary, in English

A search for vector-like quarks and excited quarks in events containing a top quark and a W boson in the final state is reported here. The search is based on 20.3 fb−1 of proton-proton collision data taken at the LHC at a centre-of-mass energy of 8 TeV recorded by the ATLAS detector. Events with one or two leptons, and one, two or three jets are selected with the additional requirement that at least one jet contains a b-quark. Single-lepton events are also required to contain at least one large-radius jet from the hadronic decay of a high-pTW boson or a top quark. No significant excess over the expected background is observed and upper limits on the cross-section times branching ratio for different vector-like quark and excited-quark model masses are derived. For the excited-quark production and decay to Wt with unit couplings, quarks with masses below 1500 GeV are excluded and coupling-dependent limits are set. © 2016, The Author(s).

Department/s

  • Particle and nuclear physics
  • eSSENCE: The e-Science Collaboration

Publishing year

2016

Language

English

Pages

1-46

Publication/Series

Journal of High Energy Physics

Volume

2016

Issue

2

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Keywords

  • Exotics
  • Hadron-Hadron scattering

Status

Published

ISBN/ISSN/Other

  • ISSN: 1029-8479