Abstract
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.
Original language | English (US) |
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Article number | 110 |
Pages (from-to) | 1-46 |
Number of pages | 46 |
Journal | Journal of High Energy Physics |
Volume | 2016 |
Issue number | 2 |
DOIs | |
State | Published - Feb 1 2016 |
Keywords
- Exotics
- Hadron-Hadron scattering
ASJC Scopus subject areas
- Nuclear and High Energy Physics