TY - GEN AU - Aad, G. AU - Aguilar Saavedra, Juan Antonio AU - Atlas Collaboration PY - 2012 SN - 0031-9007 SN - 1079-7114 UR - http://hdl.handle.net/10481/30558 AB - This Letter presents a search for pair production of heavy down-type quarks decaying via b′→Wt in the lepton+jets channel, as b′b¯′→W−tW+t¯→bb¯W+W−W+W−→l±νbb¯qq¯qq¯qq¯. In addition to requiring exactly one lepton, large missing transverse momentum,... LA - eng PB - American Physical Society KW - Top quark KW - Atlas detector KW - Hadronic colliders TI - Search for Down-Type Fourth Generation Quarks with the ATLAS Detector in Events with One Lepton and Hadronically Decaying W Bosons ER -