Search for pair production of a new heavy quark that decays into a W boson and a light quark in pp collisions at √s = 8 TeV with the ATLAS detector
Author(s)Taylor, Frank E.
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A search is presented for pair production of a new heavy quark (Q) that decays into a W boson and a light quark (q) in the final state where one W boson decays leptonically (to an electron or muon plus a neutrino) and the other W boson decays hadronically. The analysis is performed using an integrated luminosity of 20.3 fb[superscript −1] of pp collisions at √s = 8 TeV collected by the ATLAS detector at the LHC. No evidence of Q[bar over Q] production is observed. New chiral quarks with masses below 690 GeV are excluded at 95% confidence level, assuming BR(Q → Wq) = 1. Results are also interpreted in the context of vectorlike quark models, resulting in the limits on the mass of a vectorlike quark in the two-dimensional plane of BR(Q → Wq) versus BR(Q → Hq).
DepartmentMassachusetts Institute of Technology. Department of Physics
Physical Review D
American Physical Society
Aad, G., B. Abbott, J. Abdallah, O. Abdinov, R. Aben, M. Abolins, O. S. AbouZeid, et al. “Search for Pair Production of a New Heavy Quark That Decays into a W Boson and a Light Quark in pp Collisions at √s = 8 TeV with the ATLAS Detector.” Phys. Rev. D 92, no. 11 (December 22, 2015). © 2015 CERN, for the ATLAS Collaboration
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