Search for down-type fourth generation quarks with the ATLAS detector in events with one lepton and hadronically decaying W bosons

G. Aad, Mogens Dam, Nele Maria Philomena Boelaert, Jørgen Beck Hansen, John Renner Hansen, Jørn Dines Hansen, Peter Henrik Hansen, Simon Johann Franz Heisterkamp, Morten Dam Jørgensen, Sascha Mehlhase, Esben Bryndt Klinkby, Björn Stefan Nilsson, Troels Christian Petersen, Ask Emil Løvschall-Jensen, Stefania Xella