Search for pair production of heavy vector-like quarks decaying into high-pT W bosons and top quarks in the lepton-plus-jets nal state in pp collisions at root s = 13 TeV with the ATLAS detector Aaboud, M. Aguilar Saavedra, Juan Antonio Atlas Collaboration Exotics Hadron-Hadron scattering (experiments) Vector-like quarks A search is presented for the pair production of heavy vector-like B quarks, primarily targeting B quark decays into a W boson and a top quark. The search is based on 36:1 fb-1 of pp collisions at ps = 13TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Data are analysed in the lepton-plus-jets nal state, characterised by a high-transverse-momentum isolated electron or muon, large missing transverse momentum, and multiple jets, of which at least one is b-tagged. No signi cant deviation from the Standard Model expectation is observed. The 95% con dence level lower limit on the B mass is 1350 GeV assuming a 100% branching ratio to Wt. In the SU(2) singlet scenario, the lower mass limit is 1170 GeV. The 100% branching ratio limits are found to be also applicable to heavy vector-like X production, with charge +5/3, that decay into Wt. This search is also sensitive to a heavy vector-like B quark decaying into other nal states (Zb and Hb) and thus mass limits on B production are set as a function of the decay branching ratios. 2019-11-18T10:14:21Z 2019-11-18T10:14:21Z 2018-08-10 journal article Abraham, N. L., Allbrooke, B. M. M., Asquith, L., Cerri, A., Chavez Barajas, C. A., Jones, S. D., ... & Stevenson, T. J. (2018). Search for pair production of heavy vector-like quarks decaying into high-pT W bosons and top quarks in the lepton-plus-jets final state in pp collisions at√ s= 13 TeV with the ATLAS detector. Journal of High Energy Physics, 8, 48. http://hdl.handle.net/10481/57945 10.1007/JHEP08(2018)048 eng http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España Springer Nature