TY - JOUR AU - ATLAS Collaboration (Aaboud, M. et al AU - Alvarez Piqueras, D. AU - Bailey, A. J. AU - Barranco Navarro, L. AU - Cabrera Urban, S. AU - Castillo Gimenez, V. AU - Cerda Alberich, L. AU - Costa, M. J. AU - Escobar, C. AU - Estrada Pastor, O. AU - Ferrer, A. AU - Fiorini, L. AU - Fuster, J. AU - Garcia, C. AU - Garcia Navarro, J. E. AU - Gonzalez de la Hoz, S. AU - Higon-Rodriguez, E. AU - Jimenez Pena, J. AU - Lacasta, C. AU - Madaffari, D. AU - Mamuzic, J. AU - Marti-Garcia, S. AU - Melini, D. AU - Mitsou, V. A. AU - Pedraza Lopez, S. AU - Rodriguez Bosca, S. AU - Rodriguez Rodriguez, D. AU - Salt, J. AU - Soldevila, U. AU - Sanchez, J. AU - Valero, A. AU - Valls Ferrer, J. A. AU - Vos, M. PY - 2018 DA - 2018// TI - Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton-proton collisions at root s=13 TeV with the ATLAS detector T2 - Eur. Phys. J. C JO - European Physical Journal C SP - 565 - 39pp VL - 78 IS - 7 PB - Springer AB - A search for new heavy particles that decay into top-quark pairs is performed using data collected from proton-proton collisions at a centre-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. The integrated luminosity of the data sample is 36.1 fb(-1). Events consistent with top-quark pair production are selected by requiring a single isolated charged lepton, missing transverse momentum and jet activity compatible with a hadronic top-quark decay. Jets identified as likely to contain b-hadrons are required to reduce the background from other Standard Model processes. The invariant mass spectrum of the candidate top-quark pairs is examined for local excesses above the background expectation. No significant deviations from the Standard Model predictions are found. Exclusion limits are set on the production cross-section times branching ratio for hypothetical Z' bosons, Kaluza-Kein gluons and Kaluza-Klein gravitons that decay into top-quark pairs. SN - 1434-6044 UR - http://arxiv.org/abs/1804.10823 UR - https://doi.org/10.1140/epjc/s10052-018-5995-6 DO - 10.1140/epjc/s10052-018-5995-6 LA - English N1 - WOS:000438114500005 ID - ATLASCollaborationAaboud_etal2018 ER -